Bio Unit 3 Test Questions And Already Passed Answers.
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Module
AP Biology
Institution
AP Biology
Cellular Respiration - Answer the metabolic processes whereby certain organisms obtain energy from organic moelcules
Kilocalories - Answer the unit in which energy is measured
Redox Reaction - Answer A chemical reaction involving the transfer of one or more electrons from one reactan...
Bio Unit 3 Test Questions And Already
Passed Answers.
Cellular Respiration - Answer the metabolic processes whereby certain organisms obtain energy from
organic moelcules
Kilocalories - Answer the unit in which energy is measured
Redox Reaction - Answer A chemical reaction involving the transfer of one or more electrons from one
reactant to another; also called oxidation-reduction reaction.
Oxidation - Answer The loss of electrons from a substance involved in a redox reaction.
Reduction - Answer any process in which electrons are added to an atom or ion (as by removing oxygen
or adding hydrogen)
NAD+ - Answer electron carrier involved in glycolysis
NADH - Answer the reduced form of NAD+; an electron-carrying molecule that functions in cellular
respiration
Electron Transport Chain - Answer a series of proteins in which the high-energy electrons from the
Krebs cycle are used to convert ADP into ATP
Glycolysis - Answer first step in releasing the energy of glucose, in which a molecule of glucose is
broken into two molecules of pyruvate
Pyruvate Oxidation - Answer 2nd step in cellular respiration occurs on the way to the mitochondrial
matrix. Pyruvate is oxidized into 1 CO2, 1 NADH, 1 acetyl-COA (2 carbons attached to coenzyme A)
, Citric Acid Cycle - Answer in cellular respiration, series of chemical reactions that break down glucose
and produce ATP; energizes electron carriers that pass the energized electrons on to the electron
transport chain
Oxidative Phosphorylation - Answer The production of ATP using energy derived from the redox
reactions of an electron transport chain.
Chemiosmosis - Answer A process for synthesizing ATP using the energy of an electrochemical gradient
and the ATP synthase enzyme.
Substrate-Level Phosphorylation - Answer The formation of ATP by directly transferring a phosphate
group to ADP from an intermediate substrate in catabolism.
Intermediates - Answer the compounds that form between the initial reactant, glucose, and the final
product, pyruvic acid
Acetyl CoA - Answer The entry compound for the Krebs cycle in cellular respiration; formed from a
fragment of pyruvate attached to a coenzyme.
Oxaloacetate - Answer A four-carbon molecule that binds with the two-carbon acetyl unit of acetyl-CoA
to form citric acid in the first step of the Krebs cycle.
Citric Acid - Answer 6 carbon; formed in Krebs Cycle; intermediate in the metabolism of carbohydrates
ATP Synthase - Answer large protein that uses energy from H+ ions to bind ADP and a phosphate group
together to produce ATP (+28 ATP/ cycle)
FADH2 - Answer electron carrier produced during the Krebs cycle
Lactic Acid Fermentation - Answer series of anaerobic chemical reactions in which pyruvic acid uses
NADH to form lactic acid and NAD+, which is then used in glycolysis; supplies energy when oxygen for
aerobic respiration is scarce
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