EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
Biochemistry ACS Review Questions and
Answers
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
Page 1/21
,EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
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
Page 2/21
, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
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?
Page 3/21
Biochemistry ACS Review Questions and
Answers
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
Page 1/21
,EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
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
Page 2/21
, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
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?
Page 3/21
