791. Which of the following is not true of glycolysis?
A. ADP is phosphorylated to ATP via substrate level phosphorylation
B. The pathway does not require oxygen
C. The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters
D. The pathway requires two moles of ATP to get started catabo-lizing each mole of glucose

792. In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because
A. the techniques for isolating the phosphate donor are not refined enough
B. no such phosphate donor exists
C. the high-energy phosphate donor is very short-lived and difficult to isolate
D. None of the above

793. ATP is from which general category of molecules?
A. Polysaccharides
B. Proteins
C. Nucleotides
D. Amino acids

794. The glycolytic pathway (glucose → 2 pyruvate) is found
A. in all living organisms
B. primarily in animals excluding particles
C. only in eukaryotes
D. only in yeast

795. Which of the following could act as an uncoupler of electron transport and ATP synthesis?
A. TheFo base-piece of ATP synthase (without the Fl subunit)
B. Dinitrophenol
C. neither (a) nor (b)
D. Both (a) and (b)

796. Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?
A. Allosteric control of the enzyme activity
B. Diffusional coupling between adjacent active sites
C. Genetic control of the enzyme concentration
D. Covalent modification of the enzyme

797. Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by
A. ATP and PEP
B. AMP and Pi
C. ATP and ADP
D. Citrate and ATP

798. Which of the following regulates glycolysis steps?
A. Phosphofructokinase
B. Hexose kinase
C. Pyruvate kinase
D. All of these

799. During glycolysis, the major energy generating step involves
A. pyruvate kinase
B. phosphoglycerate kinase
C. glyceraldehyde-3 -dehydrogenase
D. Phosphofructokinase

800. Fructose-2,6-bisphosphate
A. activates fructose-1,6-bisphosphatase
B. activates phosphofructokinase
C. inhibits fructose-1,6-bisphosphatase
D. both (b) and (c)

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