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| What term describes a substance that is made when two or more different atoms bond together in a certain ratio? |
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| Blood becomes more acidic with increasing levels of carbon dioxide. How might the body respond to restore blood pH to its normal level to maintain homeostasis? |
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Definition
| increase breathing rate to expel more carbon dioxide |
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| A researcher conducts several studies that confirm his hypothesis. On his Web site, he describes his work and results, concluding that he has developed a new theory of livercentric healing. Why is it incorrect for this researcher to describe his conclusions as a theory? |
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Definition
| His conclusions are not supported by a wide range of evidence. |
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| The best way to see structures inside a cell would be to use... |
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| What is the primary role of DNA in the cell? |
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| An enzyme is a catalyst in a living thing. What function do enzymes carry out? |
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Definition
| decrease the activation energy needed to start a reaction |
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Definition
| a compound that releases a hydrogen ion in water |
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Term
| Which of the following properties of water is not caused by hydrogen bonding? |
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Term
| What kind of bonds link the monomers in a protein? |
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Definition
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Term
| In what kind of molecule are the instructions for building proteins stored? |
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| What are the parts that make up the lock-and-key model of enzyme function? |
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Definition
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Term
| What happens to a catalyst during a chemical reaction? |
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Definition
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Term
| What term describes the reactants that an enzyme acts on? |
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Definition
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Term
| Which conditions are likely to affect the shape of an enzyme? |
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Definition
| compound that donates a proton (H+)when dissolved in a solution. |
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Definition
| energy input necessary to initiate a chemical reaction. |
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Definition
| attraction between molecules of different substances |
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| molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur |
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Definition
| smallest basic unit of matter |
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Definition
| compound that accepts a proton (H+) when dissolved in solution |
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Definition
| amount of energy needed to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms |
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Definition
| molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches |
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Definition
| substances that decreases activation energy and increases reaction rate in a chemical reaction |
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Definition
| proces by which substances change into different substances through the breaking and forming of chemical bonds. |
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Definition
| attraction between molecules of the same substance. |
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Definition
| substance made of atoms of different elements that are bonded together in a particular ratio |
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Definition
| chemical bond formed when two atoms share one or more pairs of electrons |
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Definition
| substance made of only one type of atom that cannot be broken down by chemical means. |
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| chemical reaction that requires a net input of energy |
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| protein that catalyzes chemical reactions for organisms |
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Definition
| condition in which reactants and products in chemical reactions are performed in the same rate |
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Definition
| chemical reaction that yields a net release of energy in the form of heat |
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Definition
| hydrocarbon chain often bonded with glycerol in a lipid |
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Definition
| attraction between a slightly positive hydrogen atom and a slightly negative atom |
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Definition
| atom that has gained or lost one or more electrons |
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Definition
| chemical bond formed through the electrical force between the oppositely charged ions |
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Definition
| nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils |
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Definition
| two or more atoms held together by covalent bonds; not necessarily a compound |
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Definition
| molecular subunit of a polymer |
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Definition
| polymer of nucleotides; the genetic material of organisms |
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Definition
| measure of acidity; related to free hydrogen ion concentration in solution |
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Definition
| large, carbon-based molecule formed by monomers |
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| substance formed by a chemical reaction |
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| polymer composed of amino acids linked by peptide bonds; folds into a particular structure depending on bonds between amino acids. |
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| substance that is changed by a chemical reaction |
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| substance that dissolves in a solvent and is present in a lower concentration than the solvent. |
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| mixture that is consistent throughout, also called a homogeneous mixture |
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| reactant in a chemical reaction upon which an enzyme acts |
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| substance in which solutes dissolve and that is present in greatest conctration |
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Term
| Viruses share many characteristics with living things. However, they are not living organisms because they |
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Definition
| do not reproduce on their own. |
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Term
| An enzyme is a catalyst in a living thing. What function do enzymes carry out? |
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Definition
| decrease the activation energy needed to start a reaction |
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Term
| Why is Earth's biodiversity greatest near the equator? |
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Definition
| More species can live in warm climates than in cold climates |
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Term
| In what way are a human and a bacterium related? |
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Definition
| They are made up of similar molecules. |
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Term
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Definition
| Scanning Electron Microscope - scans the surface of a specimen with a beam of electrons |
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Term
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Definition
| Transmission Electron Microscope - transmits electrons through a thin slice of specimen |
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Definition
| Magnetic resonance imaging - can be used to see x-rays and tissues and stuff like that. |
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Term
| How do light microscopes differ from electron microscopes? |
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Definition
| Light microscopes can examine living specimens; electron microscopes cannot. |
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| Which microscope can a virus be studied with? |
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