Biochemistry ACS Review Exam
Questions and Answers 100%
PASS
All of the compounds represent different metabolites of pyruvate except:
A. Acetyl-CoA
B. Alanine
C. Glutamate
D. Lactate
E. Oxaloacetate—ANSWER-C. Glutamate
Signal transduction involving glucagon has which of the following as a
second messenger?
A. Ca^2+
B. cAMP
C. cGMP
,D. calmodulin
E. inositol triphosphate (IP3)—ANSWER-B. cAMP
The key regulatory enzymes that commit the cell to either glycolysis or
gluconeogenesis are PFK-1 and FBPase-1. Which molecule is the key
allosteric effector of the PFK-1/FBPase-1 enzyme system?
A. Glucose
B. Glucose-6-phosphate (G6P)
C. Fructose-6-phosphate (F6P)
D. Fructose-1,6-biphosphate (FBP)
E. Fructose-2,6-biphosphate (F2,6P)—ANSWER-E. F2,6P
Which is not required for the oxidative decarboxylation of pyruvate to form
acetyl-CoA by the pyruvate dehydrogenase complex?
A. NAD+
B. FADH2
C. Lipoic acid
D. Coenzyme A
E. Thiamine Pyrophosphate (TPP)—ANSWER-B. FADH2
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, As glucose levels in the blood begin to drop, glucagon is released from the
alpha cells of the pancreas. Release of this polypeptide hormone helps
increase the availability of ATP-producing compound by
A. inhibiting acetyl-Coa carboxylase causing an increased in beta-oxidation
B. stimulating glycogen phophorylase causing the release of glucose from
glycogen
C. stimulating hormone-sensitive triacylglycerol lipase in adipose cells
causing the release of fatty acids
D. all of the above
E. none of the above—ANSWER-D. all of the above
During starvation or diabetes mellitus the brain derives most of its energy
from
A. fatty acids
B. glucose
C. ketone bodies
D. glycogen
E. fructose—ANSWER-C. ketone bodies
Which receptor has inherent tyrosine kinase activity?
Questions and Answers 100%
PASS
All of the compounds represent different metabolites of pyruvate except:
A. Acetyl-CoA
B. Alanine
C. Glutamate
D. Lactate
E. Oxaloacetate—ANSWER-C. Glutamate
Signal transduction involving glucagon has which of the following as a
second messenger?
A. Ca^2+
B. cAMP
C. cGMP
,D. calmodulin
E. inositol triphosphate (IP3)—ANSWER-B. cAMP
The key regulatory enzymes that commit the cell to either glycolysis or
gluconeogenesis are PFK-1 and FBPase-1. Which molecule is the key
allosteric effector of the PFK-1/FBPase-1 enzyme system?
A. Glucose
B. Glucose-6-phosphate (G6P)
C. Fructose-6-phosphate (F6P)
D. Fructose-1,6-biphosphate (FBP)
E. Fructose-2,6-biphosphate (F2,6P)—ANSWER-E. F2,6P
Which is not required for the oxidative decarboxylation of pyruvate to form
acetyl-CoA by the pyruvate dehydrogenase complex?
A. NAD+
B. FADH2
C. Lipoic acid
D. Coenzyme A
E. Thiamine Pyrophosphate (TPP)—ANSWER-B. FADH2
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, As glucose levels in the blood begin to drop, glucagon is released from the
alpha cells of the pancreas. Release of this polypeptide hormone helps
increase the availability of ATP-producing compound by
A. inhibiting acetyl-Coa carboxylase causing an increased in beta-oxidation
B. stimulating glycogen phophorylase causing the release of glucose from
glycogen
C. stimulating hormone-sensitive triacylglycerol lipase in adipose cells
causing the release of fatty acids
D. all of the above
E. none of the above—ANSWER-D. all of the above
During starvation or diabetes mellitus the brain derives most of its energy
from
A. fatty acids
B. glucose
C. ketone bodies
D. glycogen
E. fructose—ANSWER-C. ketone bodies
Which receptor has inherent tyrosine kinase activity?
