(1) Which statement about glycolysis is FALSE?
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(1) Which statement about glycolysis is FALSE?
(A) At two steps of glycolysis, ATP is hydrolyzed and the released free energy powers the transfer of
the phosphate to a different molecule.
(B) Glycolysis is a cytosolic process that does not require mitochondria for function.
(C) The catabolism of (1) glucose will yield (2) NADH molecules by the end of glycolysis.
(D) All cells in the body perform glycolysis, although red blood cells do so infrequently, preferring to
catabolize fat or protein instead.
(E) Glycolysis is an anaerobic process, meaning it can proceed in the absence of oxygen.
(2) Match each enzyme below to its function during glycolysis:
Hexokinase
Phosphofructokinase (PFK)
Aldolase
Enolase
Pyruvate kinase
(A) This enzyme forms a high phosphoryl transfer potential molecule that is used for ATP synthesis.
(B) This enzyme is the last to catalyze a reaction using a 6-carbon substrate.
(C) This enzyme hydrolyzes a high phosphoryl transfer potential molecule to form ATP.
(D) The enzyme ensures that glucose is primed for catabolism, at the expense of an ATP.
(E) This enzyme catalyzes the irreversible creation of a doubly phosphorylated molecule.
(3) Glycolysis involves many steps where a phosphate is transferred from a higher phosphoryl
transfer potential molecule to one of lower phosphoryl transfer potential (substrate-level
phosphorylation). Which of the following glycolytic enzymes catalyzes a phosphoryl transfer reaction
where the transfer DOES NOT occur between two different molecules, but rather between one
molecule and its environment?
(A) phosphofructokinase
(B) phosphoglycerate kinase
(C) glyceraldehyde 3-phosphate dehydrogenase
(D) pyruvate kinase
(E) hexokinase
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