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introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | however , these local decreases in entropy can occur only with an expenditure of energy , where some of that energy is converted into heat or other non-usable forms . the net effect of the original process ( local decrease in entropy ) and the energy transfer ( increase in entropy of surroundings ) is an overall increa... | how does the transformation of energy leads to increase in overall entropy of the universe ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | however , these local decreases in entropy can occur only with an expenditure of energy , where some of that energy is converted into heat or other non-usable forms . the net effect of the original process ( local decrease in entropy ) and the energy transfer ( increase in entropy of surroundings ) is an overall increa... | how does this entropy decrease ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | so , every time an energy transfer happens , some amount of useful energy will move from the useful to the useless category . heat increases the randomness of the universe if heat is not doing work , then what exactly does it do ? heat that doesn ’ t do work goes towards increasing the randomness ( disorder ) of the un... | when something cold requires a hot object to give its heat , the very deduction of heat happens from the hotter system meaning it gets colder , since it gets colder , doesnt it mean there is a decrease in entropy ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | every cell in your body has its own internal organization ; the cells are organized into tissues , and the tissues into organs ; and your entire body maintains a careful system of transport , exchange , and commerce that keeps you alive . thus , at first glance , it may not be clear how you , or even a simple bacterium... | was entropy in the universe also increasing during the time when the first heavy elements were fused and dispersed by early stars ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | it 's obvious that glowing light bulbs generate heat in addition to light , but moving pool balls do too ( thanks to friction ) , as do the inefficient chemical energy transfers of plant and animal metabolism . to see why this heat generation is important , stay tuned for the second law of thermodynamics . the second l... | i thought that was the second law of thermodynamics ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | the person or organism will maintain some basal rate of metabolic activity , causing the breakdown of complex molecules to smaller and more numerous ones and the release of heat , thus increasing the entropy of the surroundings . stated more generally , processes that locally decrease entropy , such as those that build... | can a non-living thing contribute to the increase of entropy of the universe , assuming there 's no interaction between the non-living thing and its surrounding ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | you can explore this concept further in the videos in this tutorial , or in this straightforward physics video . entropy and the second law of thermodynamics the degree of randomness or disorder in a system is called its entropy . since we know that every energy transfer results in the conversion of some energy to an u... | what is the difference between entropy and enthalpy ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | to see why this heat generation is important , stay tuned for the second law of thermodynamics . the second law of thermodynamics at first glance , the first law of thermodynamics may seem like great news . if energy is never created or destroyed , that means that energy can just be recycled over and over again , right... | in the first paragraph of the first law of thermodynamics , where does the energy originally come from if it can not be created ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | this law may seem kind of abstract , but if we start to look at examples , we ’ ll find that transfers and transformations of energy take place around us all the time . for example : light bulbs transform electrical energy into light energy ( radiant energy ) . one pool ball hits another , transferring kinetic energy a... | would n't the energy have to have been created at one point , even if it was many , many many years ago ? |
introduction what kind of system are you : open or closed ? as it turns out , this is a physics question , not a philosophical one . you , like all living things , are an open system , meaning that you exchange both matter and energy with your environment . for instance , you take in chemical energy in the form of food... | this law may seem kind of abstract , but if we start to look at examples , we ’ ll find that transfers and transformations of energy take place around us all the time . for example : light bulbs transform electrical energy into light energy ( radiant energy ) . one pool ball hits another , transferring kinetic energy a... | how do the laws of thermodynamics allow us to predict the flow of energy in organisms and ecosystems ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | why is the mona lisa considered to be such an important painting ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | is n't cultural heritage is also a form of history : `` learn from it or be doomed to repeat its blunders '' ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | artists , writers , scientists , craftsmen and musicians learn from each other , even if they belong to different cultures , far removed in space or time . just think about the influence of japanese prints on paul gauguin ’ s paintings ; or of african masks on pablo picasso ’ s works . or you could also think of wester... | alot of these places have paintings and carvings right on the structure ... what happens then ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | how did cultural heritage start ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | artists , writers , scientists , craftsmen and musicians learn from each other , even if they belong to different cultures , far removed in space or time . just think about the influence of japanese prints on paul gauguin ’ s paintings ; or of african masks on pablo picasso ’ s works . or you could also think of wester... | do scupltures explain history as as paintings can like expressions or feelings ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | where does cultural appropriation play into this discussion of cultural heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | or you could also think of western architecture in liberian homes in africa . when the freed african-american slaves went back to their homeland , they built homes inspired by the neoclassical style of mansions on american plantations . american neoclassical style was in turn influenced by the renaissance architect and... | it is one thing to be inspired , but where is the line drawn between being inspired to appropriating artistic styles that are not your own ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | is there a year when cultural heritage started ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | let ’ s take another example , that of the mona lisa painted in the early sixteenth century by leonardo da vinci , and displayed at the musée du louvre in paris . from a modern point of view , whose national heritage does the mona lisa belong to ? leonardo was a very famous italian painter , that ’ s why the mona lisa ... | how did the mona lisa become part of the french heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | can something that just your family does be a cultural heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | the statue represented an athlete scraping dust , sweat and oil from his body with a particular instrument called “ strigil. ” emperor tiberius deeply admired the sculpture and ordered it be removed from public view and placed in his private palace . the roman people rose up and obliged him to return the apoxyomenos to... | if you and your family have their own version of singing happy birthday or made up a recipe that everyone just loves , could that be considered a culture ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | national heritage is important , bus in some countries some of the cultural traditions are above actual human rights , there are many examples mostly in undeveloped countries , this heritage should be conserved ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | are cultural differences going to disappear as the world becomes more and more globalised ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | it is also the result of a selection process : a process of memory and oblivion that characterizes every human society constantly engaged in choosing—for both cultural and political reasons—what is worthy of being preserved for future generations and what is not . all peoples make their contribution to the culture of t... | and others in many other cities around the world the first symptoms of this ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | why is the mona lisa considered to be such an important painting ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | would cultural heritage mean that what ever was created by your culture is part of you heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | my ethnic back ground is british and scottish , so what is created or developed by the scots or british is part of my heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | why does the mona lisa smile ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . | how about the notre dame church from french emperors , which were being built by blood of vietnamese ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | one of the most frequently recurring issues in protecting cultural heritage is the difficult relationship between the interests of the individual and the community , the balance between private and public rights . ancient romans established that a work of art could be considered part of the patrimony of the whole commu... | who defines the boundary between art work that could be owned and bought and destroyed by private individuals/ artwork that must be preserved for the sake of humankind ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | it represents our history and our identity ; our bond to the past , to our present , and the future . tangible and intangible cultural heritage cultural heritage often brings to mind artifacts ( paintings , drawings , prints , mosaics , sculptures ) , historical monuments and buildings , as well as archaeological sites... | do they still help and protect the valuable sculptures made ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | will the spirit of the red army on long march ( china 's history ) become intangible cultural heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | we often hear about the importance of cultural heritage . but what is cultural heritage ? | what is kind of a summary ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | what emotions is mona lisa portraying ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | what if we do n't safeguard our cultural heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | it also consists of immaterial elements : traditions , oral history , performing arts , social practices , traditional craftsmanship , representations , rituals , knowledge and skills transmitted from generation to generation within a community . intangible heritage therefore includes a dizzying array of traditions , m... | what is viennese coffee house culture ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | therefore , a chinese ming vase owned by another country becomes part of that other countries heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | that ’ s why it ’ s important to respect and safeguard all cultural heritage , through national laws and international treaties . illicit trafficking of artifacts and cultural objects , pillaging of archaeological sites , and destruction of historical buildings and monuments cause irreparable damage to the cultural her... | if it 's cultural history then when historic art from other countries is in a different country than its origin , why is it not in the country of its origin ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | is mona lisa have a simple answer , or do you have to have a bigger imagination ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | does mona lisa have the same value such as of a tradinational african mask ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | what do you think about cultural heritage ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | leonardo was a very famous italian painter , that ’ s why the mona lisa is obviously part of the italian cultural heritage . when leonardo went to france , to work at king francis i ’ s court , he probably brought the mona lisa with him . it seems that in 1518 king francis i acquired the mona lisa , which therefore end... | i like how picasso uses crooked lines on faces , and how he did africas art really easily.when , leornardo went to france he probably went to bring mona lisas painting worth alot back then.where does mona lisa 's painting evolve from ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | one of the most frequently recurring issues in protecting cultural heritage is the difficult relationship between the interests of the individual and the community , the balance between private and public rights . ancient romans established that a work of art could be considered part of the patrimony of the whole commu... | is there a source to read any further about the roman art being considered part of the patrimony ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | so ownership gave the french the cultural heritage if the mona lisa ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | regarding the unesco world heritage list ; why is not all cultural heritage in the world preserved ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | our right to enjoy the arts , and to participate in the cultural life of the community is included in the united nation ’ s 1948 universal declaration of human rights . whose cultural heritage ? the term “ cultural heritage ” typically conjures up the idea of a single society and the communication between its members . | i know that this question is very situational , but how do we draw the line between an expanding cultural heritage and cultural appropriation ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | unesco ( united nations educational , scientific and cultural organization ) , founded in 1954 , has adopted international conventions on the protection of cultural heritage , to foster intercultural understanding while stressing the importance of international cooperation . the protection of cultural property is an ol... | when it comes to art , how do people trace back how old a painting is ? |
we often hear about the importance of cultural heritage . but what is cultural heritage ? and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? first of all , let ’ s have a look at the meaning of the words . “ heritage ” is a pr... | and whose heritage is it ? whose national heritage , for example , does the mona lisa by leonardo da vinci belong to ? is it french or italian ? | why mona lisa does n't have eye brows ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart above : hydrophobic amino acids have nonpolar side chains , such as alkyl groups or aromatic groups . hydrophilic—neutral—amino acids contain pol... | would n't leucine be a hydrophobic residue , since its r-group is high in methyl groups ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | acidic and basic side chains affect the $ \text { pka } { 1 } $ and $ \text { pka } { 2 } $ values , thus affecting the pi of the amino acid . classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart ab... | is the flowchart correct as of 5/20 ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | these folded secondary structures are stabilized by the formation of hydrogen bonds between the amino acids . α-helix in an α helix , the amino acids get oriented in such a manner that the carbonyl , $ \text { c=o } $ , group of the nth amino acid can form a hydrogen bond with the amido , n-h , group of the $ \text { (... | why is n't tyrosine aromatic ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the titration curve of glycine will look something like the one shown below ; at $ \text { ph } = 2.34 \text { ( pka } _ { 1 } ) $ , forms a and b will be in equilibrium—i.e. , the concentration of a equals the concentration of b . at $ \text { ph } = 9.6 $ , forms b and c will be in equilibrium—i.e. , concentration of... | should n't the nh2 on the right in the isoelectric diagram be a subscript 2 ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | hydrophilic—basic—amino acids have side chains that contain amine , $ \text { -nh } _ { 2 } $ , groups . how are amino acids joined together ? amino acids are joined together through peptide bonds . | when multiple amino acids join together to become a polypeptide , what happens to the pka ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | amino acids are joined together through peptide bonds . peptide bonds are covalent bonds formed by the nucleophilic addition-elimination reaction between the carboxylic group of one amino acid and the amino group of another amino acid ; this reaction releases a molecule of water as the by product . a peptide bond is es... | i thought the amine group and carboxylic group should be 180 degrees ( across from one another ) and not 90 degrees ( orthogonal ) from one another ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | if you notice in the structure above , $ \text { cα } $ is a chiral center , that is to say , this carbon atom is attached to four different groups . chirality refers to a molecule that has optical activity , so amino acids are optically active molecules . the only exception is glycine , the simplest amino acid , in wh... | in the 3rd paragraph , and in the second last line , something called optical activity is being said.can anyone say what is that ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . | has the issue with the flow charts been updated , so the a.a. are correctly categorized ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | in the trans configuration , these groups are on opposite sides of the peptide bond . the take home message : different levels of protein structure the four levels of protein structure are : primary structure , secondary structure , tertiary structure , and quaternary structure . this concept can get a bit confusing , ... | how will u write the structure of alanine in dot wedge formula ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | step 2 : the carbonyl bond reforms with the elimination of hydroxide ion . step 3 : the hydroxide ion abstracts a proton—elimination of water—and the positive charge on nitrogen is neutralized . this results in the formation of a new bond—a peptide bond between the two amino acids . | why does ammonia have a positive charge ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | proteins are often called the building blocks of life . isoelectric point ( pi ) of amino acids isoelectric point is the point along the ph scale where the amino acid has a net zero charge . consider glycine . | is n't ph=pka the half equivalence point ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | proteins are often called the building blocks of life . isoelectric point ( pi ) of amino acids isoelectric point is the point along the ph scale where the amino acid has a net zero charge . consider glycine . | and the concentrations should be equal at equivalence point ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | pairs of amino acids like these are called enantiomers . only l-amino acids are constituents of proteins . our body synthesizes most of its own l-amino acids ; these then get incorporated into proteins . | why is it that only l-amino acids are constituents of proteins ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | acidic and basic side chains affect the $ \text { pka } { 1 } $ and $ \text { pka } { 2 } $ values , thus affecting the pi of the amino acid . classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart ab... | why amino acids are called as building blocks of protiens ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the enhanced freedom of rotation with regards to these two bonds allows proteins to fold into a variety of shapes . these folded structures are referred to as secondary protein structures and are essentially of two types—alpha helix and *beta pleated sheets . these folded secondary structures are stabilized by the form... | would beta-turn and hairpin loop also fall under examples of secondary structures ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the take home message : different levels of protein structure the four levels of protein structure are : primary structure , secondary structure , tertiary structure , and quaternary structure . this concept can get a bit confusing , so let ’ s try to understand it through a simple analogy . can you imagine being able ... | where can i find about the concept of molecular chaperones and proteasomes ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | in the cis configuration , the two alpha carbon atoms fall on the same side of the peptide bond . in the trans configuration , these groups are on opposite sides of the peptide bond . the take home message : different levels of protein structure the four levels of protein structure are : primary structure , secondary s... | in the section titled different levels of protein structure , under primary structure , when distinguishing between the rigidity of the peptide bond , is n't the peptide bond between the carbonyl carbon and the amino group rather than between the alpha carbon and the amino group ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | in the trans configuration , these groups are on opposite sides of the peptide bond . the take home message : different levels of protein structure the four levels of protein structure are : primary structure , secondary structure , tertiary structure , and quaternary structure . this concept can get a bit confusing , ... | also , do n't beta turns come into play in secondary structure as well ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | a peptide bond is essentially an amide bond . mechanism of peptide bond formation the simplest way to represent a peptide bond formation is as follows . let ’ s consider two amino acids with side chains , $ \redd { r_ { 1 } } $ and $ \blued { r_ { 2 } } $ respectively . | can someone post a link to the correct mechanism of the chemistry of peptide bond formation ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the same forces of interactions operate in a quaternary structure as operate in a tertiary structure . forces that keep the different protein structures together level of protein structure | interactions that stabilize the structure -|- primary | covalent bond ( amide/peptide bond ) secondary | hydrogen bonds tertiary ... | does anybody know the relative strengths of parallel versus antiparallel pleated sheets ' hydrogen bonds ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | in the trans configuration , these groups are on opposite sides of the peptide bond . the take home message : different levels of protein structure the four levels of protein structure are : primary structure , secondary structure , tertiary structure , and quaternary structure . this concept can get a bit confusing , ... | in the drawing of the resonance structure of the peptide bonds should n't structure b have the orange c=o group be a c-o single bond with o having a negative charge ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | acidic and basic side chains affect the $ \text { pka } { 1 } $ and $ \text { pka } { 2 } $ values , thus affecting the pi of the amino acid . classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart ab... | as of today , 5/9/2016 , is the flowchart for amino acids -- > hydrophobic/hydrophilic -- > polar/nonpolar correct ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | pairs of amino acids like these are called enantiomers . only l-amino acids are constituents of proteins . our body synthesizes most of its own l-amino acids ; these then get incorporated into proteins . | does anyone have any ideas for a hands-on activity i can have my audience do after i give a presentation on the `` structural levels of proteins '' and `` fibrous and globular proteins '' ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | a peptide bond is essentially an amide bond . mechanism of peptide bond formation the simplest way to represent a peptide bond formation is as follows . let ’ s consider two amino acids with side chains , $ \redd { r_ { 1 } } $ and $ \blued { r_ { 2 } } $ respectively . | in the mechanism of peptide bond formation , what would be the rate determing step of the reaction ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the same forces of interactions operate in a quaternary structure as operate in a tertiary structure . forces that keep the different protein structures together level of protein structure | interactions that stabilize the structure -|- primary | covalent bond ( amide/peptide bond ) secondary | hydrogen bonds tertiary ... | are n't disulfide bonds considered a part of the primary structure of the protein because it involves a covalent bond and is part of the primary connectivity ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | hydrophilic—basic—amino acids have side chains that contain amine , $ \text { -nh } _ { 2 } $ , groups . how are amino acids joined together ? amino acids are joined together through peptide bonds . | how are nucleotides linked together in nucleic acid ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | the same forces of interactions operate in a quaternary structure as operate in a tertiary structure . forces that keep the different protein structures together level of protein structure | interactions that stabilize the structure -|- primary | covalent bond ( amide/peptide bond ) secondary | hydrogen bonds tertiary ... | would it be the parallel form because the sheets are essentially experiencing two hydrogen bonds per residue , or would it be the antiparallel form because the atoms that are hydrogen bonding are closer together ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide bonds , forming a long chain . you can think of a protein as a string of beads where each bead is an amino acid . amino acid structure and its classification an amino acid contains both a carboxylic group an... | an amino end to a protein is nh2 and or nh3 ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | isoelectric point ( pi ) of amino acids isoelectric point is the point along the ph scale where the amino acid has a net zero charge . consider glycine . look at the equilibrium below ; as we add hydroxide ions—in other words , raise the ph—different charged forms of glycine exist . | i thought glycine was polar ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide bonds , forming a long chain . you can think of a protein as a string of beads where each bead is an amino acid . amino acid structure and its classification an amino acid contains both a carboxylic group an... | what protein structure ( s ) have the `` r '' groups of an amino acid chain interact with each other ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | peptide bonds are covalent bonds formed by the nucleophilic addition-elimination reaction between the carboxylic group of one amino acid and the amino group of another amino acid ; this reaction releases a molecule of water as the by product . a peptide bond is essentially an amide bond . mechanism of peptide bond form... | why then are nitrogen 's p-orbital electrons shown to form a peptide bond via nucleophilic addition-elimination ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | how are amino acids joined together ? amino acids are joined together through peptide bonds . peptide bonds are covalent bonds formed by the nucleophilic addition-elimination reaction between the carboxylic group of one amino acid and the amino group of another amino acid ; this reaction releases a molecule of water as... | or , if actual , is it that only the small % of deprotonated amino groups can form peptide bonds ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart above : hydrophobic amino acids have nonpolar side chains , such as alkyl groups or aromatic groups . hydrophilic—neutral—amino acids contain pol... | should n't tyrosine also be listed under hydrophobic aromatic group ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | classification of different amino acids there are 20 common amino acids . based on the nature of the r group , they are classified as follows : let 's summarize the flowchart above : hydrophobic amino acids have nonpolar side chains , such as alkyl groups or aromatic groups . hydrophilic—neutral—amino acids contain pol... | does n't the large hydrophobic ring on the side chain make it more hydrophobic relative to the hydrophilic -oh group on the side chain ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | you can think of a protein as a string of beads where each bead is an amino acid . amino acid structure and its classification an amino acid contains both a carboxylic group and an amino group . amino acids that have an amino group bonded directly to the alpha-carbon are referred to as alpha amino acids . | isnt't tyrosine a nonpolar aromatic amino acid ? |
proteins are large , complex molecules that are critical for the normal functioning of the human body . they are essential for the structure , function , and regulation of the body ’ s tissues and organs . proteins are made up of hundreds of smaller units called amino acids that are attached to one another by peptide b... | you can think of a protein as a string of beads where each bead is an amino acid . amino acid structure and its classification an amino acid contains both a carboxylic group and an amino group . amino acids that have an amino group bonded directly to the alpha-carbon are referred to as alpha amino acids . | how do i tell if an amino acid is polar or nonpolar by just looking at the structure ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | the opening and closing of these channels , and the resulting shifts in ion levels inside the cell , play an important role in electrical transmission along membranes ( in nerve cells ) and in muscle contraction ( in muscle cells ) . carrier proteins another class of transmembrane proteins involved in facilitated trans... | why are carrier proteins considered a form of passive transport , they use energy to move the molecule through the membrane ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | the opening and closing of these channels , and the resulting shifts in ion levels inside the cell , play an important role in electrical transmission along membranes ( in nerve cells ) and in muscle contraction ( in muscle cells ) . carrier proteins another class of transmembrane proteins involved in facilitated trans... | why no energy is spent on switching the carrier proteins ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | molecules can move through the cell ’ s cytosol by diffusion , and some molecules also diffuse across the plasma membrane ( as shown in the picture above ) . each individual substance in a solution or space has its own concentration gradient , independent of the concentration gradients of other materials , and will dif... | if particles moves from low concentration to higher concentration can we call it the concentration gradient of that substance as the concentration changes ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | each individual substance in a solution or space has its own concentration gradient , independent of the concentration gradients of other materials , and will diffuse according to that gradient . other factors being equal , a stronger concentration gradient ( larger concentration difference between regions ) results in... | what is the difference between simple diffusion and facilitated diffusion ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | thus , over time , the net movement of molecules will be out of the more concentrated area and into the less concentrated one , until the concentrations become equal ( at which point , it ’ s equally likely for a molecule to move in either direction ) . this process does not require any energy input ; in fact , a conce... | the topic states above that `` a concentration gradient itself is a form of stored ( potential ) energy '' please explain this ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | thus , in a single cell , there can be different rates and directions of diffusion for different molecules . for example , oxygen might move into the cell by diffusion , while at the same time , carbon dioxide might move out in obedience to its own concentration gradient . facilitated diffusion some molecules , such as... | what is faster , a simple diffusion ( of oxygen , for example ) , or a facilitated one ( of water through aquaporines ) ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | the carrier proteins involved in facilitated diffusion simply provide hydrophilic molecules with a way to move down an existing concentration gradient ( rather than acting as pumps ) . channel and carrier proteins transport material at different rates . in general , channel proteins transport molecules much more quickl... | what is the purpose of a transport protein ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | thus , over time , the net movement of molecules will be out of the more concentrated area and into the less concentrated one , until the concentrations become equal ( at which point , it ’ s equally likely for a molecule to move in either direction ) . this process does not require any energy input ; in fact , a conce... | how does the free energy of the system change when the ion passes through the channel protein ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | thus , over time , the net movement of molecules will be out of the more concentrated area and into the less concentrated one , until the concentrations become equal ( at which point , it ’ s equally likely for a molecule to move in either direction ) . this process does not require any energy input ; in fact , a conce... | is it true that the free energy is stored in the concentration gradient ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | selective permeability the phospholipids of plasma membranes are amphipathic : they have both hydrophilic ( water-loving ) and hydrophobic ( water-fearing ) regions . the hydrophobic core of the plasma membrane helps some materials move through the membrane , while it blocks the movement of others . polar and charged m... | the movement of minerals in plants is unidirectional or bi-directional ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | thus , in a single cell , there can be different rates and directions of diffusion for different molecules . for example , oxygen might move into the cell by diffusion , while at the same time , carbon dioxide might move out in obedience to its own concentration gradient . facilitated diffusion some molecules , such as... | h : ow do gasses pass through the phospholipid bi-layers like are they in gaseous form or are they dissolved in water or lipids ( answer with reference to carbon dioxide and oxygen ) ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | the carrier proteins involved in facilitated diffusion simply provide hydrophilic molecules with a way to move down an existing concentration gradient ( rather than acting as pumps ) . channel and carrier proteins transport material at different rates . in general , channel proteins transport molecules much more quickl... | is it possible to have a three-pass transmembrane protein , where you have different types of channel proteins mixed up ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | for example , oxygen might move into the cell by diffusion , while at the same time , carbon dioxide might move out in obedience to its own concentration gradient . facilitated diffusion some molecules , such as carbon dioxide and oxygen , can diffuse across the plasma membrane directly , but others need help to cross ... | how to hydrophobic molecules move across the membrane ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | for example , oxygen might move into the cell by diffusion , while at the same time , carbon dioxide might move out in obedience to its own concentration gradient . facilitated diffusion some molecules , such as carbon dioxide and oxygen , can diffuse across the plasma membrane directly , but others need help to cross ... | can lipids pass through the membrane by simple diffusion , as they also are non polar and hydrophobic ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | diffusion in the process of diffusion , a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space . for example , think about someone opening a bottle of cleaning ammonia in the middle of a room . the ammonia molecules will init... | for example , if i were to form a phospholipid bilayer somewhere in a lab and then poured some oil onto that , what it be able to pass through ? |
introduction have you been through airport security lately ? if you have , you ’ ve probably noticed that it ’ s carefully designed to let some things in ( such as passengers with tickets ) and to keep others out ( such as weapons , explosives , and bottled water ) . flight attendants , captains , and airport personnel... | selective permeability is essential to cells ’ ability to obtain nutrients , eliminate wastes , and maintain a stable interior environment different than that of the surroundings ( maintain homeostasis ) . the simplest forms of transport across a membrane are passive . passive transport does not require the cell to exp... | when is passive transport used ? |
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