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What regulates the passage of blood into capillary beds? |
Types of neurons include sensory neurons, motor neurons, and? |
What method uses a retailer's coding method to catalog biological specimens in museums? |
What kind of rays can travel thousands of meters through air and can penetrate and damage cells deep inside the body? |
What are proteins encoded by? |
About one-fourth of the blood pumped with each heartbeat enters arteries serving what organs of digestion? |
What substances, which serve as catalysts, are involved in most of the chemical reactions that take place in organisms? |
Soil forms where land areas are what? |
What is the large muscle that extends across the bottom of the chest below the lungs called? |
What is the method of evolution by which advantageous heritable traits become more common over generations? |
What is an upward force that fluids exert on any object that is placed in them? |
What in saliva protects the lining of the mouth from abrasion and lubricates food for easier swallowing? |
What helps control the muscles and maintain balance? |
The two main fundamental particles that make up neutrons are quarks and what else? |
Chromatin condenses into chromosomes during prophase, the first and longest phase of what process? |
What kind of reactions are involved in processes ranging from the contraction of muscles to the digestion of food? |
What is the smallest unit of a chemical element called? |
Shielding should be used when receiving x-rays to limit exposure to what potentially harmful form of energy? |
What are the most numerous and diverse biochemical compounds? |
In recent years, it has been hypothesized that molecules in the environment also act as? |
What are the male reproductive cells called? |
How many pairs of chromosomes do human have ? |
What describes a close and long-term interaction between different species? |
Narrowing of the arterioles causes an increase of what upstream in the arteries? |
The rate of evolution is influenced by the rate of changes to what? |
Most members of the animal kingdom have differentiated tissues of four main classes—nervous, muscular, connective, and this? |
Vertebrates are all chordates that have a what? |
What is the term for a state of matter that yields to sideways or shearing forces? |
The other ammonium ions are changed into nitrogen gas by what? |
The coordinated activities of the legume and the rhizobium bacteria depend on what between the partners? |
What type of rocks form when sediments are compacted and cemented together? |
What is the reaction called when an acid and a base react? |
What is the measure of water potential? |
Within organs, arteries branch into what small vessels that convey blood to the capillaries? |
What do you call the movement of a substance from an area of a higher amount toward an area of lower amount? |
Mollusks such as squid and octopi, which must hunt to survive, possess what complex organs containing millions of neurons? |
What is a thin layer of gas that surrounds earth called? |
What connects the fetus to the placenta? |
Name the term used to described prokaryotes that require oxygen. |
What might a scientist do to confirm the work of another? |
What does fiber help keep at normal levels in the body? |
What causes genetic disorders? |
There are a series of rules for naming branched alkanes (and, ultimately, for all organic compounds). these rules make up the system of nomenclature for naming what? |
The binding of what helps eliminate antigens by phagocytosis and complement-mediated lysis |
What kind of energy is released when the nucleus of an atom is split? |
Each cell and every living thing requires what? |
What do scientists use to study the deep without going to the seafloor? |
Burning gas to run our cars is an example of how human activity is contributing to what global event? |
Solar cells convert the energy in sunlight to what type of energy? |
What type of seismic waves do the most damage? |
What type of orbitals do electrons in successive atoms on the periodic table tend to fill first? |
In the water molecule, two of the electron pairs are lone pairs rather than what? |
What kind of reproduction is vegetative reproduction? |
One of the simplest machines is the lever, which is a rigid bar pivoted at a fixed place called what? |
What structure is a larger assembly of several polypeptide chains that are now referred to as subunits of the protein? |
What is the body cavity that reptiles have that is involved in reproduction? |
Animals that have been modified to express recombinant dna are called what? |
There are how many visual clues to indicate a chemical reaction? |
Behaviors that occur naturally and are not learned are called what? |
What kind of energy positions do electrons occupy during ground state? |
How many neutrons do 99% of carbon atoms have? |
If a quantity of a reactant remains unconsumed after complete reaction has occurred, it is? |
What serious sti can damage the heart, brain and other organs or even cause death, if untreated? |
What glands in the breast secrete milk? |
The conversion of food that is consumed to nutrients involves what two major processes: |
What is the change of state from a solid to a gas without passing through the liquid state? |
Which organ has a thick mucus lining that protects the underlying tissue from the action of the digestive juices? |
Scientists use the principles of what to make predictions, which they then test? |
What are misfolded versions of normal brain proteins? |
What happens to the volume of a gas as the kelvin temperature increases? |
Particulates cause lung diseases. they can also increase the risk of heart disease and the number of what? |
What forms the changing shapes of sand dunes? |
What is an odorless white solid that is harmless unless consumed in large quantities? |
Catabolic reactions involve breaking what? |
What type of resource is limited in supply and cannot be replaced except over millions of years? |
Photosynthesis produces oxygen as a byproduct, and respiration produces what as a byproduct? |
What is the field of biology that focuses on the study of inheritance in humans? |
Muscle contraction requires repeated cycles of binding and what? |
Objects in motion that return to the same position after a fixed period of time are said to be in what? |
Physical and chemical properties of geometric isomers are generally what? |
What do you call a substance that cannot be broken down to other substances by chemical reactions.? |
What is the permanent prevention of gamete production or release called? |
Which stage of life is typically easier for learning multiple languages? |
"cardio" has become slang for what type of exercise that raises your heart rate for an extended amount of time? |
A venule is an extremely small vein, generally 8–100 micrometers in diameter. postcapillary venules join multiple capillaries exiting from a capillary bed. multiple venules join to form what? |
Which part of the brain secretes hormones that tell the pituitary gland either to secrete or to stop secreting its hormones? |
What is the name of the smallest planet in our solar system, which is also nearest to the sun? |
Food chains and what describe the transfer of energy within an ecosystem, from one organism to another? |
Because force and electric field are what, they have direction as well as their value? |
Mutations in regulatory genes that normally control the cell cycle cause what? |
Shortening of muscle fibers is called what?` |
What body joint incurs the most common overuse injury among runners and other athletes? |
In 1802, charles and gay-lussac both proposed that for a fixed amount of gas at a constant pressure, what is directly proportional to its absolute temperature? |
Why do waves travel faster through solids? |
Sounds, chemicals, and visual cues are examples of what between animals? |
Where do sperm go after leaving the testicles and before entering the vas deferens? |
What organ packages nutrients absorbed by the digestive system; produces plasma proteins, clotting factors, and bile; and disposes of worn-out cell components and waste products? |
What is the substance called whenatoms of different elements join together? |
What are fibers that depend on aerobic respiration called? |
Capillaries are narrow-diameter tubes that can fit red blood cells through in single file and are the sites for the exchange of what? |
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