biology ch. 7 terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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cellular respiration | the process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide
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pyruvic acid | the three-carbon compound that is produced during glycolysis and needed for both the aerobic and anaerobic pathways of cellular respiration that follow glycolysis
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NADH | the reduced form of NAD+; an electron-carrying molecule that functions in cellular respiration
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anaerobic | describes a process that does not require oxygen
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aerobic respiration | if oxygen is present in the cell's environment, pyruvic acid is broken down and NADH is used to make a large amount of ATP through the process
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glycolysis | the anaerobic breakdown of glucose pyruvic acid, which makes a small amount of energy available to cells in the form of ATP
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NAD+ | nicotinamide adenine dinucleotide, an organic molecule that serves as an electron carrier by being oxidized to NAD+ and reduced to NADH
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fermentation | the breakdown of carbohydrates by enzymes, bacteria, yeasts, or mold in the absence of oxygen
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lactic acid fermentation | the chemical breakdown of carbohydrates that produces lactic acid as the main end product
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alcoholic fermentation | the anaerobic process by which yeasts and other microorganisms break down sugars to form carbon dioxide and ethanol
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kilocalorie | a unit of energy equal to 1,000 cal
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mitochondrial matrix | the fluid that is inside the inner membrane of a mitochondrion
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acetyl CoA | acetyl coenzyme A, a compound that is synthesized by cells and that plays a major role in metabolism
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Krebs Cycle | a series of biochemical reactions that convert pyruvic acid into carbon dioxide and water; it is the major pathway of oxidation in animal, bacterial, and plant cells, and it releases energy
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oxaloacetic acid | a four-carbon compound of Krebs cycle that combines with acetyl CoA to form citric acid
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citric acid | a six-carbon compound formed in the Krebs cycle
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FAD | flavin adenine dinucleotide, a compound that acts as a hydrogen acceptor in dehydrogenation reactions
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