Exam (elaborations)
Chem 464 Final Exam Review - Multiple Choice
- Course
- CHEM 464
- Institution
- California State University - Northridge
Chem 464 Final Exam Review - Multiple Choice
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Chem 464 Final Exam Review - MultipleChoice
Select the statement that best describes a biosynthesis reaction.
A. exchange of bonds within organic molecules to form different organic
molecules
B. breakdown of polysaccharides to form monosaccrahides
C. large organic molecule are broken down to form smaller organic molecules
D. small organic molecules are connected to form larger organic molecules
E. none of the above - D. small organic molecules are connected to form larger
organic molecules
Identify the most appropriate biochemical reaction type for the following
reaction.
A. oxidation-reduction reaction free radical reaction
B. rearrangement/ isomerization/ elimination
C. cleavage/ formation of a C-C bond
D. group transfer - B. rearrangement/ isomerization/ elimination
(=O and -OH are switched in reaction)
,Phosphofructokinase is a four-subunit protein with four active sites.
Phosphofructokinase catalyzes step 3 of glycolysis, converting fructose-6-
phosphate to fructose to fructose-1,6-bisphosphate. The PEPconcentraction in
the cell affects phosphofructokinase activity. Which statement about PEP
regulation of phosphofructokinase is true.
A. PEP competes with fructose-6-phosphate for the active site of
phosphofructokinase.
B. The apparent affinity of phosphofructokinase for its substrate increases when
PEP binds.
C. PEP is a feedback inhibitor of phosphofructokinase.
D. PEP is a positive effector of phosphofructokinase.
E. There is no true statement. - C. PEP is a feedback inhibitor of
phosphofructokinase.
Which of the following reactions in glycolysis produces ATP as a product?
A. Hexokinase
B. Glyceraldehyde-3-phosphate dehydrogenase
C. Pyruvate kinase
D. aldolase
E. Phosphofructokinase-1 - C. Pyruvate kinase
, Which of the following reactions in glycolysis utilizes a covalent enzyme
intermediate?
A. Phosphofructokinase-1
B. Hexokinase
C. Phosphohexose isomerase
D. Aldolase
E. Triose phosphate isomerase - D. Aldolase
The ultimate electron acceptor in the fermentation of glucose to ethanol is:
A. acetaldehyde.
B. acetate.
C. ethanol.
D. NAD+.
E. pyruvate. - A. acetaldehyde.
Which of the following statements about the pentose phosphate pathway is
correct?
A. It generates 36 mol of ATP per mole of glucose consumed.
B. It generates 6 moles of CO2 for each mole of glucose consumed.
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