context stringlengths 545 71.9k | questionsrc stringlengths 16 10.2k | question stringlengths 11 563 |
|---|---|---|
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | a dynamic equilibrium results , in which ammonia molecules are continually exchanging protons with water , and ammonium ions are continually donating the protons back to hydroxide . the major species in solution is non-ionized ammonia , $ \text { nh } _3 $ , because ammonia will only deprotonate water to a small extent... | what is the meaning of deprotonate ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | $ \purplec { \text { conjugate pair 2 } } =\text { h } _2 \text o\text { and } \text { oh } ^- $ since ammonia is a weak base , the ammonium ion can donate a proton back to hydroxide to reform ammonia and water . thus , a dynamic equilibrium exists . this will always be true for reactions involving weak acids and bases... | dissociation of acetic acid is a '' '' dynamic equilibrium '' '' what is the meaning ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | strong acids and bases ionize completely in aqueous solution , while weak acids and bases ionize only partially in aqueous solution . the conjugate base of a brønsted-lowry acid is the species formed after an acid donates its proton . the conjugate acid of a brønsted-lowry base is the species formed after a base accept... | if an molecule donates 2 h+ , would that still be considered as an acid ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | strong acids and bases ionize completely in aqueous solution , while weak acids and bases ionize only partially in aqueous solution . the conjugate base of a brønsted-lowry acid is the species formed after an acid donates its proton . the conjugate acid of a brønsted-lowry base is the species formed after a base accept... | or is it only an acid if a molecule only donates a single h+ ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | the two species in a conjugate acid-base pair have the same molecular formula except the acid has an extra $ \text h^+ $ compared to the conjugate base . practice 1 : identifying acid-base reactions based on brønsted-lowry theory , which of the following are acid-base reactions ? practice 2 : identifying conjugate acid... | why is the classification of a substance as a bronsted-lowry acid or base important ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | $ \purplec { \text { conjugate pair 2 } } =\text { h } _2 \text o\text { and } \text { h } _3\text { o } ^+ $ each conjugate acid-base pair in our reaction contains one brønsted-lowry acid and one brønsted-lowry base ; the acid and base differ by a single proton . it will generally be true that a reaction between a brø... | in the reaction of ammonia with water , why ca n't ammonia act as an acid instead of a base ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | therefore , $ \text { hcl } $ is acting as a brønsted-lowry acid . since $ \text { nh } _3 $ has a lone pair which it uses to accept a proton , $ \text { nh } _3 $ is a brønsted-lowry base . note that according to the arrhenius theory , the above reaction would not be an acid-base reaction because neither species is fo... | the oxygen in water also has lone pair of electrons so why ca n't it be the base in this reaction ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | since water is a proton donor in this reaction , it is acting as a brønsted-lowry acid . ammonia accepts a proton from water to form an ammonium ion , $ \text { nh } _4^+ $ . therefore , ammonia is acting as a brønsted-lowry base . | how will the equilibrium be maintained , if you 're saying that only some ammonia dissociates & not all to form ammonium by accepting a proton ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | the two species in a conjugate acid-base pair have the same molecular formula except the acid has an extra $ \text h^+ $ compared to the conjugate base . practice 1 : identifying acid-base reactions based on brønsted-lowry theory , which of the following are acid-base reactions ? practice 2 : identifying conjugate acid... | leaving aside that the example equations are acid-base reactions under the arehenious definition , ( which is extremely frustrating in a bronsted-lowery article ) , is it possible for there to be a bronsted-lowry strong/weak acid or base ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | therefore , $ \text { hcl } $ is acting as a brønsted-lowry acid . since $ \text { nh } _3 $ has a lone pair which it uses to accept a proton , $ \text { nh } _3 $ is a brønsted-lowry base . note that according to the arrhenius theory , the above reaction would not be an acid-base reaction because neither species is fo... | is there any way to deduce number of lone pair electron without doing electron configuration ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | an example of a strong base is sodium hydroxide , $ \text { naoh } $ . in water , sodium hydroxide dissociates completely to give sodium ions and hydroxide ions : $ \text { naoh } ( aq ) \rightarrow\text { na } ^+ ( aq ) +\text { oh } ^- ( aq ) $ thus , if we make a solution of sodium hydroxide in water , only $ \text ... | i wan na know something how nh4 ions remains as it is in the solution when i react nh4oh with hcl .. ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | we do n't expect any undissociated $ \text { naoh } $ . let 's now look at ammonia , $ \text { nh } _3 $ , in water . ammonia is a weak base , so it will become partially ionized in water : $ \text { nh } _3 ( aq ) +\text { h } _2\text { o } ( l ) \rightleftharpoons\text { nh } _4^+ ( aq ) +\text { oh } ^- ( aq ) $ som... | i think nh4 ions are unstable so it deprotonates giving ammonia gas and there is no longer nh4.. ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | since water is a proton donor in this reaction , it is acting as a brønsted-lowry acid . ammonia accepts a proton from water to form an ammonium ion , $ \text { nh } _4^+ $ . therefore , ammonia is acting as a brønsted-lowry base . | in hint 2 of practice question 1 , if hbr is donating a proton to lioh and lioh accepts the proton , how does the reaction form libr and h20 as its reactants ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | the two species in a conjugate acid-base pair have the same molecular formula except the acid has an extra $ \text h^+ $ compared to the conjugate base . practice 1 : identifying acid-base reactions based on brønsted-lowry theory , which of the following are acid-base reactions ? practice 2 : identifying conjugate acid... | in practice question number 1 , why is n't the second equation an acid base reaction ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | the two species in a conjugate acid-base pair have the same molecular formula except the acid has an extra $ \text h^+ $ compared to the conjugate base . practice 1 : identifying acid-base reactions based on brønsted-lowry theory , which of the following are acid-base reactions ? practice 2 : identifying conjugate acid... | how is the bronsted-lowry acid and base theory diffrent than the arrhenius acids and base theory ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | this indicates that dissociation of acetic acid is a dynamic equilibrium where there will be a significant concentration of acetic acid molecules that are present as neutral $ \text { ch } _3\text { cooh } $ molecules as well as in the form of the dissociated ions , $ \text h^+ $ and $ \text { ch } _3\text { coo } ^- $... | my question is : `` what is the rationale behind the fact that some acids are strong and some weak ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | a strong acid is a species that dissociates completely into its constituent ions in aqueous solution . nitric acid is an example of a strong acid . it dissociates completely in water to form hydronium , $ \text { h } _3\text { o } ^+ $ , and nitrate , $ \text { no } _3^- $ , ions . | is there chemical theory that can explain ( and perhaps predict ) why strong acid , like hcl , is strong , and why weak acid , like ch3cooh , is weak ? |
key points a brønsted-lowry acid is any species that is capable of donating a proton— $ \text { h } ^+ $ . a brønsted-lowry base is any species that is capable of accepting a proton , which requires a lone pair of electrons to bond to the $ \text { h } ^+ $ . water is amphoteric , which means it can act as both a brøns... | a common question is , “ when do you know when something is a strong or a weak acid ? ” that is an excellent question ! the short answer is that there are only a handful of strong acids , and everything else is considered a weak acid . once we are familiar with the common strong acids , we can easily identify both weak... | or is it just an observational fact that hcl is strong acid and ch3cooh is weak ? |
reconstructions of ancient sites or finds can help us to understand the distant past . for non-academics , reconstructions offer a glimpse into that past , a kind of visual accumulation of scientific research communicated by means of images , models or even virtual reality . we see reconstructions in films , museums an... | if we construct ancient architecture using the computer , we not only need to decide every aspect of that particular building , but also the relation to adjoining architecture . sometimes , the process of reconstructing several buildings and thinking about their interdependence can reveal interesting connections , for ... | with the invention of 3d printers , do you think this process will become more accurate ? |
overview the roman empire began in 27 bce when augustus became the sole ruler of rome . augustus and his successors tried to maintain the imagery and language of the roman republic to justify and preserve their personal power . beginning with augustus , emperors built far more monumental structures , which transformed ... | currency under the empire , roman currency was not just an economic tool ; it was a political tool , as well . julius caesar , augustus ’ s adopted father , had been the first roman to put his own portrait on coins , and augustus continued this practice . prior to caesar , only dead romans or gods were shown on coins . | was the coins of julius caesar stamped by some machine or was it made my hand ? |
overview the roman empire began in 27 bce when augustus became the sole ruler of rome . augustus and his successors tried to maintain the imagery and language of the roman republic to justify and preserve their personal power . beginning with augustus , emperors built far more monumental structures , which transformed ... | currency under the empire , roman currency was not just an economic tool ; it was a political tool , as well . julius caesar , augustus ’ s adopted father , had been the first roman to put his own portrait on coins , and augustus continued this practice . prior to caesar , only dead romans or gods were shown on coins . | so was augustus just like a wealthy person which was very included in the government or did he inherit some sort of power from he 's adopted father julius caesar ? |
overview the roman empire began in 27 bce when augustus became the sole ruler of rome . augustus and his successors tried to maintain the imagery and language of the roman republic to justify and preserve their personal power . beginning with augustus , emperors built far more monumental structures , which transformed ... | why did augustus use the title “ princeps ” and not emperor ? what factors might have made the roman empire more stable than the roman republic ? imperial institutions augustus and his successors worked hard to maintain much of the image of the republic while in practice they exercised something close to absolute power... | what were roman buildings made of that made them susceptible to fire ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | in this diagram , the base years—when the cpi is defined as 100—are set for the average level of prices that existed from 1982 to 1984 . diagram b below shows the annual percentage changes in the cpi over time , which is the inflation rate . let 's take a closer look at diagram b . the first two waves of inflation are ... | is it correct to say that the periods of inflation for wwi and wwii described in diagram b were caused by a shortage of products being available on the shelves in stores and lack of service due to workers fighting in the war ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | however , these countries also had perpetual shortages of goods since forbidding prices to rise acts like a price ceiling and creates a situation where quantity demanded often exceeds quantity supplied . as russia and china made a transition toward more market-oriented economies , they also experienced outbursts of inf... | also , why do controlled economies that change to a market system end up experiencing high levels of inflation ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | there were a few months in 2009 that were deflationary , but not at an annual rate . recessions are typically accompanied by higher levels of unemployment , and the total demand for goods falls , pulling the price level down . conversely , the rate of inflation often—but not always—seems to start moving up when the eco... | is it because the consumer demand and ability to supply products remains unchanged , but now has a different pricing system associated to it ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | inflation around the world around the rest of the world , the pattern of inflation has been very mixed , as can be seen in the graph below , which shows inflation rates over the last several decades . many industrialized countries—not just the united states—had relatively high inflation rates in the 1970s . for example... | what are the implications of such high percentages in real times ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | inflation around the world around the rest of the world , the pattern of inflation has been very mixed , as can be seen in the graph below , which shows inflation rates over the last several decades . many industrialized countries—not just the united states—had relatively high inflation rates in the 1970s . for example... | to ask simply that , how does it feel like to stay in such a country with such high inflation rates ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | conversely , the rate of inflation often—but not always—seems to start moving up when the economy is growing very strongly , for example immediately after wartime . inflation around the world around the rest of the world , the pattern of inflation has been very mixed , as can be seen in the graph below , which shows in... | but what is the variation of inflation during the world wars ? |
key points in the us economy , the annual inflation rate in the last two decades has typically been around 2 % to 4 % . the periods of highest inflation in the united states in the 20th century occurred during the years after world wars i and ii and in the 1970s . the period of lowest inflation—actually , deflation—was... | over the last century , during what periods was the us inflation rate highest and lowest ? what is deflation ? critical-thinking question why do you think the united states ' experience with inflation over the last 50 years has been so much milder than that of many other countries ? | was there a deflation maybe ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | or in other words , it is a fraction whose numerator and denominator are polynomials . these are examples of rational expressions : $ \dfrac { 1 } { x } $ , $ \quad\dfrac { x+5 } { x^2-4x+4 } $ , $ \quad\dfrac { x ( x+1 ) ( 2x-3 ) } { x-6 } $ notice that the numerator can be a constant and that the polynomials can be o... | x+1/x+7 was the problem , so why cant be divide the x 's out so the answer would be 1/7 ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | or in other words , it is a fraction whose numerator and denominator are polynomials . these are examples of rational expressions : $ \dfrac { 1 } { x } $ , $ \quad\dfrac { x+5 } { x^2-4x+4 } $ , $ \quad\dfrac { x ( x+1 ) ( 2x-3 ) } { x-6 } $ notice that the numerator can be a constant and that the polynomials can be o... | so for the denominator in that fraction , can i use the method `` the different of 2 squares '' to factor it out to ( x+2 ) ( x-2 ) and solve for x from there ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x $ , like $ 3x^2-6x-1 $ . | does this mean that a number with a denominator as a constant and a polynomial numerator is not a rational expression ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | in other words , the domain of a rational expression includes all real numbers except for those that make its denominator zero . example : finding the domain of $ \dfrac { x+1 } { ( x-3 ) ( x+4 ) } $ let 's find the zeros of the denominator and then restrict these values : $ \begin { align } & amp ; ( x-3 ) ( x+4 ) = 0... | with an example like { 2x-3 } { x ( x+1 ) } /x ( x+1 ) finding the domain , you would have to eqaute x to 0 and x+1 to 0 right ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | or in other words , it is a fraction whose numerator and denominator are polynomials . these are examples of rational expressions : $ \dfrac { 1 } { x } $ , $ \quad\dfrac { x+5 } { x^2-4x+4 } $ , $ \quad\dfrac { x ( x+1 ) ( 2x-3 ) } { x-6 } $ notice that the numerator can be a constant and that the polynomials can be o... | for question number 5 how does x equal all real numbers ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | since division by $ 0 $ is undefined , $ \blued x=\blued 2 $ is not a possible input for this expression ! domain of rational expressions the domain of any expression is the set of all possible input values . in the case of rational expressions , we can input any value except for those that make the denominator equal t... | how would we write the domain out in interval notation ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | a rational expression is simply a quotient of two polynomials . or in other words , it is a fraction whose numerator and denominator are polynomials . these are examples of rational expressions : $ \dfrac { 1 } { x } $ , $ \quad\dfrac { x+5 } { x^2-4x+4 } $ , $ \quad\dfrac { x ( x+1 ) ( 2x-3 ) } { x-6 } $ notice that t... | how can i know if a fraction is rationnal ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | in the case of rational expressions , we can input any value except for those that make the denominator equal to $ 0 $ ( since division by $ 0 $ is undefined ) . in other words , the domain of a rational expression includes all real numbers except for those that make its denominator zero . example : finding the domain ... | what is a real number ? |
what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . what is a rational expression ? a polynomial is an expression that consists of a sum of terms containing integer powers of $ x ... | what you will learn in this lesson this lesson will introduce you to rational expressions . you will learn how to determine when a rational expression is undefined and how to find its domain . | what 's your favorite color ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | containers of gas also have a tightly fitting movable piston that does not allow any of the gas to escape . each sample of gas is taken through a different process as described below : sample 1 : $ 500 \text { j } $ of heat exits the gas and the gas does $ 300 \text { j } $ of work sample 2 : $ 500 \text { j } $ of hea... | in example 2 , sample 1 i can not understand how does heat exits the system even when the work was done by the gas ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | this sign convention for heat $ q $ is represented in the image below . since the piston can move , the piston can do work on the gas by moving downward and compressing the gas . the collision of the downward moving piston with the gas molecules causes the gas molecules to move faster , increasing the total internal en... | if the piston moves up when the gas expands ( due to heat ) and if the volume of the gas does not decrease , what allows the piston to move down again ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | it 's really important to remember that internal energy $ u $ and temperature $ t $ will both increase when the speeds of the gas molecules increase , since they are really just two ways of measuring the same thing ; how much energy is in a system . since temperature and internal energy are proportional $ t \propto u $... | so is temperature directly proportional to internal energy ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . | work and heat are scalar quantities then in the example given above of the movable piston , why are we considering the direction of heat and work ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | this is why the first law takes the form it does , $ \delta u=q+w $ . it simply says that you can add to the internal energy by heating a system , or doing work on the system . what do each of these terms ( $ \delta u , q , w $ ) mean ? | is the temp outside a system assumed to be the same the system temp at the beginning ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat transfer and doing work are the methods of transferring energy into and out of the system . the first law of thermodyn... | what different is this from law of conservation of energy ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | the gas molecules trapped in the container are the `` system '' . those gas molecules have kinetic energy . the internal energy $ u $ of our system can be thought of as the sum of all the kinetic energies of the individual gas molecules . | in the explanation for the question ; can a gas molecule have potential energy ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | it 's really important to remember that internal energy $ u $ and temperature $ t $ will both increase when the speeds of the gas molecules increase , since they are really just two ways of measuring the same thing ; how much energy is in a system . since temperature and internal energy are proportional $ t \propto u $... | if so how does high temperature relates to high potential energy ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | the gas molecules trapped in the container are the `` system '' . those gas molecules have kinetic energy . the internal energy $ u $ of our system can be thought of as the sum of all the kinetic energies of the individual gas molecules . | so my doubt is how could we convert that form of energy into a thought ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | it 's really important to remember that internal energy $ u $ and temperature $ t $ will both increase when the speeds of the gas molecules increase , since they are really just two ways of measuring the same thing ; how much energy is in a system . since temperature and internal energy are proportional $ t \propto u $... | is temperature a function of just the kinetic energy or the total internal energy ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | it 's really important to remember that internal energy $ u $ and temperature $ t $ will both increase when the speeds of the gas molecules increase , since they are really just two ways of measuring the same thing ; how much energy is in a system . since temperature and internal energy are proportional $ t \propto u $... | where heat is still being added and temperature does n't change , but potential energy does ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | this is why the first law takes the form it does , $ \delta u=q+w $ . it simply says that you can add to the internal energy by heating a system , or doing work on the system . what do each of these terms ( $ \delta u , q , w $ ) mean ? | what would happen to the internal energy of the system ? |
what is the first law of thermodynamics ? many power plants and engines operate by turning heat energy into work . the reason is that a heated gas can do work on mechanical turbines or pistons , causing them to move . the first law of thermodynamics applies the conservation of energy principle to systems where heat tra... | this is one of the most common misconceptions when dealing with the first law of thermodynamics . the heat $ q $ represents the heat energy that enters a gas ( e.g . thermal conduction through the walls of the container ) . | a hand pump was used to pump air into a bicycles tire.why did the air become warm with out heat exchange with the surroundings ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | the artists of this period - michelangelo in rome , titian in venice , durer in nuremberg , cranach in saxony - were impacted by these changes since the church had been the single largest patron for artists . and art was now being scrutinized in an entirely new way . the catholic church was looking to see if art commun... | what innovations in art printmaking occurred in this period ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | he concluded that no matter how `` good '' he tried to be , no matter how he tried to stay away from sin , he still found himself having sinful thoughts . he was fearful that no matter how many good works he did , he could never do enough to earn his place in heaven ( remember that , according to the catholic church , ... | would secular or ancient works of art have been targeted as well ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | please note , this tutorial focuses on western europe . there are other forms of christianity in other parts of the world including for example the eastern orthodox church . essay by dr. steven zucker & amp ; dr. beth harris additional resources : an overview of the reformation ( bbc ) | what was going on with the eastern orthodox church during all the tumult elsewhere ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | by the end of the century , the world of the europeans was a lot bigger and opinions about that world were more varied and more uncertain than they had been for centuries . please note , this tutorial focuses on western europe . there are other forms of christianity in other parts of the world including for example the... | could anyone please explain in detail how the reformation of the protestants had contributed to the rise of the western europe ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | the corruption of the church was well known , and several attempts had been made to reform the church ( notably by john wyclif and jan hus ) , but none of these efforts successfully challenged church practice until martin luther 's actions in the early 1500s . martin luther martin luther was a german monk and professor... | so what is the reformation and what does it have to do with martin luther ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | in fact , many images were attacked and destroyed during this period , a phenomenon called iconoclasm . the protestant reformation today there are many types of protestant churches . for example , baptist is currently the largest denomination in the united states but there are many dozens more . | what musical form style is most attributed to the protestant reformation ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | popes and cardinals often lived more like kings than spiritual leaders . popes claimed temporal ( political ) as well as spiritual power . they commanded armies , made political alliances and enemies , and , sometimes , even waged war . | how political leaders helped to diminish the power of the catholic church in the 15th century ? |
a challenge to the church in rome in art history , the 16th century sees the styles we call the high renaissance followed by mannerism , and—at the end of the century—the emergence of the baroque style . naturally , these styles are all shaped by historical forces , the most significant being the protestant reformation... | before this time , the bible was available in latin , the ancient language of rome spoken chiefly by the clergy . before the printing press , books were handmade and extremely expensive . the invention of the printing press and the translation of the bible into the vernacular meant that for the first time in history , ... | did guttenberg invent the printing press , or movable type for alphabetic languages ? |
nearly lost to history tutankhamun was only the age of nine when he became king of egypt during the 18th dynasty of the new kingdom ( c. 1332–1323 b.c.e . ) . his story would have been lost to history if it were not for the discovery of his tomb in 1922 by the archaeologist howard carter in the valley of the kings . hi... | it is constructed of two sheets of gold that were hammered together and weighs 22.5 pounds ( 10.23 kg ) . tutankhamen is depicted wearing the striped nemes headdress ( the striped head-cloth typically worn by pharaohs in ancient egypt ) with the goddesses nekhbet and wadjet depicted again protecting his brow . he also ... | was it common for pharaohs to marry their ( very ) close relatives ? |
nearly lost to history tutankhamun was only the age of nine when he became king of egypt during the 18th dynasty of the new kingdom ( c. 1332–1323 b.c.e . ) . his story would have been lost to history if it were not for the discovery of his tomb in 1922 by the archaeologist howard carter in the valley of the kings . hi... | this left the line of succession unclear . tutankhamun died at the young age of eighteen , leading many scholars to speculate on the manner of his death—chariot accident , murder by blow to the head , and even a hippopotamus attack ! the answer is still unclear . | why did tutankhamun become king/pharaoh ( correct me if i 'm wrong ) at such a young age ? |
nearly lost to history tutankhamun was only the age of nine when he became king of egypt during the 18th dynasty of the new kingdom ( c. 1332–1323 b.c.e . ) . his story would have been lost to history if it were not for the discovery of his tomb in 1922 by the archaeologist howard carter in the valley of the kings . hi... | the gods were thought to have skin of gold , bones of silver , and hair of lapis lazuli—so the king is shown here in his divine form in the afterlife . he holds the crook and flail , symbols of the king ’ s right to rule . the goddesses nekhbet ( vulture ) and wadjet ( cobra ) , inlaid with semiprecious stones , stretc... | was this king , , or was it his father , who chassed mosses accross the red sea , ? |
nearly lost to history tutankhamun was only the age of nine when he became king of egypt during the 18th dynasty of the new kingdom ( c. 1332–1323 b.c.e . ) . his story would have been lost to history if it were not for the discovery of his tomb in 1922 by the archaeologist howard carter in the valley of the kings . hi... | at the beginning of november 1922 , carter came upon the first of twelve steps of the entrance that led to the tomb of tutankhamun . he quickly recovered the steps and sent a telegram to carnarvon in england so they could open the tomb together . carnarvon departed for egypt immediately and on november 26 , 1922 , they... | so , is like his tomb underground ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | in the case of a road map , if you want to find the shortest route between two locations , you 're looking for a path between two vertices with the minimum sum of edge weights over all paths between the two vertices . as with unweighted graphs , we call such a path a shortest path . for example , the shortest path in t... | what do graphs have to do with algorithms ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | ( if you 're talking about just one of the vertices , it 's a vertex . ) each line is an edge , connecting two vertices . we denote an edge connecting vertices $ u $ and $ v $ by the pair $ ( u , v ) $ . | can edges work the same way , with more than two vertices per edge ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | the numbers next to the vertices show one of the many possible orders in which to put on the equipment , so that undershorts go on first , then socks , then compression shorts , and so on , with the blocker going on last . you might have noticed that this particular directed graph has no cycles ; we call such a graph a... | what is a bipartite graph ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | because the `` know each other '' relationship goes both ways , this graph is undirected . an undirected edge $ ( u , v ) $ is the same as $ ( v , u ) $ . later , we 'll see directed graphs , in which relationships between vertices do n't necessarily go both ways . | why is running time of v , ( assymptotic ) o ( v ) but that of e is ( assymptotic ) o ( lge ) ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | if a directed edge leaves vertex $ u $ and enters vertex $ v $ , we denote it by $ ( u , v ) $ , and the order of the vertices in the pair matters . the number of edges leaving a vertex is its out-degree , and the number of edges entering is the in-degree . as you might imagine , graphs—both directed and undirected—hav... | can you define an algorithm for finding in-degree and out-degree of each and every node of a graph ? |
here 's one way to represent a social network : a line between the names of two people means that they know each other . if there 's no line between two names , then the people do not know each other . the relationship `` know each other '' goes both ways ; for example , because audrey knows gayle , that means gayle kn... | but using this set-size notation in asymptotic notation is cumbersome , and so we adopt the convention that in asymptotic notation , and only in asymptotic notation , we drop the set-size notation with the understanding that we 're talking about set sizes . so , instead of writing $ \theta ( |v| ) $ , we write just $ \... | what 's so cumbersome about writing the absolute value denotation ? |
background double integrals line integrals in a vector field two-dimensional curl not strictly required , but helpful for a fuller understanding : formal definition of curl in two dimensions other resources you can find examples of how green 's theorem is used to solve problems in the next article . here , i will walk ... | $ \displaystyle \oint_\greene { c_1 } \bluee { f } \cdot d\textbf { r } + \oint_\golde { c_2 } \bluee { f } \cdot d\textbf { r } $ notice , these line integrals will cancel out along the vertical line cut that you made . namely , the integral around $ \greene { c_1 } $ goes `` up '' this line , while the integral aroun... | should n't you put parentheses around `` pdx+qdy '' ? |
funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | we do n't know much about haniwa or the kofun period because there was no writing system in japan at the time . however , there is general agreement that haniwa were meant to be seen . that is , instead of being buried deep underground with the deceased , haniwa occupied and marked the open surfaces of the colossal tom... | were all or most of the keyhole shapes facing the same general direction ? |
funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | not only did the physical shape and size of the tombs transform , so did the type of haniwa , sarcophagi , and other features used in conjunction with the tombs . early kofun period : c. 250 c.e . – c. 400 c.e . | do these haniwas resemble the soldiers of japan during the kofun period ? |
funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | how did the japanese hollow them out ? |
funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | the upper section of the haniwa were modeled after animals and people ( such as female ritual specialists and male warriors ) . the reason behind this innovation is not known , but presumably reflects changes in funerary practice . haniwa modeled after residential or other kinds of buildings were also made and these we... | is there a known reason why the statues are made from clay , and not some other material ? |
funerary objects meant to be seen haniwa ( “ clay cylinder ” or “ circle of clay ” in japanese ) are large hollow , earthenware funerary objects found in japan . massive quantities of haniwa—many nearly life sized—were carefully placed on top of colossal , mounded tombs , known as kofun ( “ old tomb ” in japanese ) . d... | the square part is the front end while the round section is the rear and contains the body ( eventually bodies ) of the deceased . keyhole-shaped tombs were adopted as a kind of signature style of this state . keep in mind that the tombs could have been made in any particular shape—perhaps an octagon—but it was this ke... | what influenced the style of the later terracotta warriors in xi'an ? |
the writing and language test assesses your ability to revise and edit texts about a range of topics . each writing and language test consists of four passages with 11 questions each . you will have 35 minutes to complete the writing and language test . what the passages look like : passages on the writing and language... | when there are no additional directions or questions , assume that you have to choose the option that is most effective or correct . some passages include one or more tables , graphs , or charts that relate to the topic of the passage . a graphic may provide additional support for a point made in the passage . question... | do we have to read the whole passage or just the specific lines ? |
the writing and language test assesses your ability to revise and edit texts about a range of topics . each writing and language test consists of four passages with 11 questions each . you will have 35 minutes to complete the writing and language test . what the passages look like : passages on the writing and language... | attributions this article was adapted from the following sources : “ test specifications for the redesigned sat ” from the college board . “ sat practice tests ” from the college board . | are these grammar rules : parallel construction , sentence fragments , pronoun agreement , illogical comparisons , concision and redundancy , conjunctions and conjunctive adverbs gon na be in the new sat ? |
the writing and language test assesses your ability to revise and edit texts about a range of topics . each writing and language test consists of four passages with 11 questions each . you will have 35 minutes to complete the writing and language test . what the passages look like : passages on the writing and language... | you will have 35 minutes to complete the writing and language test . what the passages look like : passages on the writing and language test cover a range of topics and vary in both format and content . topics : history/social studies , humanities , and science passages typically look like short academic papers , while... | how many passages are there ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | this required immense amounts of time and labor , but ultimately had impressive output . while they had great farming success , southeastern native americans also continued to hunt and fish . they hunted deer with bows and arrows , as well as fished the rivers and gulf of mexico for protein . | does anyone else find it interesting the things which native americans placed enough value on to trade them over long distances ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | what do you think ? compare and contrast hopewellian ( northeast , 200 bce to 500 ce ) and mississippian culture ( southeast , 1000-1300 ce ) . why do you think the agricultural success of many in mississippian culture lead to high economic inequality ? | did mound-building first originate in the southeast with cahokia or in the northeast with the hopewell culture ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | they supplemented their diets with gathering acorns , nuts , seeds , and fruits . since they did not use any fertilizer , they had to burn the fields and create new ones every season . this required immense amounts of time and labor , but ultimately had impressive output . | why would you need to burn the fields because of no fertilizer ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | societies oftentimes had both peace chiefs and wartime chiefs—distinct for their purpose and their leadership strengths . historians know little about the religious practices of the american indians in the southeast . yet , they agree that the groups had a spiritual connection to the land and used the mounds for ceremo... | when you put american indians , does that differ from indians but mean the same thing as native americans ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | furthermore , the southeast native americans were the first to organize villages around chiefdoms , in which families were ranked by social status and proximity to the chief himself . chiefs lived in elaborate wooden structures atop large mounds , indicating their supremacy . societies oftentimes had both peace chiefs ... | how many mounds were there ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | what do you think ? compare and contrast hopewellian ( northeast , 200 bce to 500 ce ) and mississippian culture ( southeast , 1000-1300 ce ) . why do you think the agricultural success of many in mississippian culture lead to high economic inequality ? | what is ce is it like bce ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | the prominent native americans in this area are known as the five civilized tribes : cherokees , choctaws , chickasaws , creeks , and seminoles . mississippian culture , dominant from 1000 ce onward , developing from the beginnings of farming in hopewellian culture , which dominated a few centuries before in the northe... | where did hopewellian culture originate in ? |
overview the southeastern region of north america was an agriculturally productive region for many different native american tribes living in the area . mississippian culture , dominant in the southeast , drew in immense wealth , allowing natives to build enormous mounds and organized urban centers . the southeastern a... | explain the process by which wealth was concentrated at the top . how did trade influence large mississippian societies like cahokia or poverty point ? | how did trade influence large mississippian societies like cahokia or poverty point ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | end modifications increase the stability of the mrna , while splicing gives the mrna its correct sequence . ( if the introns are not removed , they 'll be translated along with the exons , producing a `` gibberish '' polypeptide . ) to learn more about pre-mrna modifications in eukaryotes , check out the article on pre... | what will happen if a `` gibberish '' polypeptide is produced ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | transcription is controlled separately for each gene in your genome . introduction have you ever had to transcribe something ? maybe someone left a message on your voicemail , and you had to write it down on paper . | do the presence of introns indicate something related to evolution ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | specifically , rna polymerase builds an rna strand in the 5 ' to 3 ' direction , adding each new nucleotide to the 3 ' end of the strand . stages of transcription transcription of a gene takes place in three stages : initiation , elongation , and termination . here , we will briefly see how these steps happen in bacter... | does the hairpin structure come in to play in transcription ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | each gene ( or group of co-transcribed genes , in bacteria ) has its own promoter . once bound , rna polymerase separates the dna strands , providing the single-stranded template needed for transcription . elongation . | i thought helicase was the enzyme that separates the dna helix for the ssb to keep the dna strands separated ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | rna polymerase the main enzyme involved in transcription is rna polymerase , which uses a single-stranded dna template to synthesize a complementary strand of rna . specifically , rna polymerase builds an rna strand in the 5 ' to 3 ' direction , adding each new nucleotide to the 3 ' end of the strand . stages of transc... | i know that it builds in a 5 ' to 3 ' direction , so does that mean that rna polymerase moves 3 ' to 5 ' ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | eukaryotic transcripts need to go through some processing steps before translation into proteins . rna polymerase the main enzyme involved in transcription is rna polymerase , which uses a single-stranded dna template to synthesize a complementary strand of rna . specifically , rna polymerase builds an rna strand in th... | what is the main difference in occurence of transcription of m-rna in eukaryotes and prokaryotes ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initiation , elongation , and termination . in eukaryotes , rna molecules must be processed after transcription : they are spliced and have ... | dear madam/sir , are the stages of transcription ( initiation , elongation and termination ) the same in bacteria and eukaryotic cells ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . | if the sequence is uaa , uag , uga ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | ( if the introns are not removed , they 'll be translated along with the exons , producing a `` gibberish '' polypeptide . ) to learn more about pre-mrna modifications in eukaryotes , check out the article on pre-mrna processing . transcription happens for individual genes not all genes are transcribed all the time . | what 's the composition of the mrna polymerase ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | the rna transcript carries the same information as the non-template ( coding ) strand of dna , but it contains the base uracil ( u ) instead of thymine ( t ) . termination . sequences called terminators signal that the rna transcript is complete . | how are proteins created starting in termination of transcription ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | specifically , rna polymerase builds an rna strand in the 5 ' to 3 ' direction , adding each new nucleotide to the 3 ' end of the strand . stages of transcription transcription of a gene takes place in three stages : initiation , elongation , and termination . here , we will briefly see how these steps happen in bacter... | what about sigma , alfa , beta and beta prime in prokaryotic transcription ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | once bound , rna polymerase separates the dna strands , providing the single-stranded template needed for transcription . elongation . one strand of dna , the template strand , acts as a template for rna polymerase . | in the elongation step , where do the nucleotides of the mrna comes from ? |
key points : transcription is the first step in gene expression . it involves copying a gene 's dna sequence to make an rna molecule . transcription is performed by enzymes called rna polymerases , which link nucleotides to form an rna strand ( using a dna strand as a template ) . transcription has three stages : initi... | eukaryotic transcripts need to go through some processing steps before translation into proteins . rna polymerase the main enzyme involved in transcription is rna polymerase , which uses a single-stranded dna template to synthesize a complementary strand of rna . specifically , rna polymerase builds an rna strand in th... | how does the rna polymerase just gets the right nucleotide ? |
key points : bacteria can be highly cooperative . some even form organized structures a lot like a multicellular tissue . biofilms are surface-attached collections of microorganisms that stick together and exchange nutrients . some prokaryotes form close associations with plants , animals , or fungi . these may be mutu... | in fact , we humans encounter lots of bacteria in each category ! mutualism some bacteria form mutualisms , mutually beneficial ( +/+ ) relationships between two organisms . for example , ruminococcus bacteria live in the gut of a cow and break down cellulose , a carbohydrate from grass , into a form usable by the cow ... | related to the section on mutualism ... how does ruminococcus get in the cow 's gut to begin with ? |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.