C785 WGU BIOCHEMISTRY |ACTUAL QUESTIONS
AND VERIFIED ANSWERS |BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
Which of the following types of lipids is not a component of the membrane structures?
A) cholesterol
B) triacylglycerols
C) cardiolipins
D) phosphatidylethanolamine
CORRECT ANSWER
B) triacylglycerols
Question 2
Which of the following lipids are glycolipids?
1. sphingomyelins
2. gangliosides
3. cephaline
4. cerebrosides
CORRECT ANSWER
C) 2+4
Question 3
Which of the following statements about the activation of FA before their inclusion in β
oxidation = wrong?
1
,A) activation of fatty acids is by binding their carboxyl group w/ coenzyme A and turning
them into acyl CoA derivatives
B) activation of the FA takes place in the mitochondrial matrix
C) activation of the FA takes place in the ER
D) long chain fatty acids are activated
CORRECT ANSWER
B) activation of the FA takes place in the mitochondrial matrix
Question 4
Which of the following pairs of vitamins act as coenzymes in the β-oxidation of fatty acids
with an odd number of carbon atoms?
A) vit. B1 and folic acid
B) biotin and vit. B12
C) folic acid and biotin
D) vit.В12 and vit.В1
CORRECT ANSWER
B) biotin and vit. B12
Question 5
Which of the following shuttle mechanisms is involved in the transfer of activated FA from
the cytosol into the mitochondria?:
a) malate-aspartate
B) glycerol-phosphate
C) acyl-carnitine
D) none of the above mentioned
CORRECT ANSWER
2
, C) acyl-carnitine
Question 6
Which of the following metabolites is an allosteric inhibitor of the regulatory enzyme of β
oxidation?
A) Propionyl-CoA
B) Malonil-CоА
C) Butyryl-CoA
D) none of the above mentioned
CORRECT ANSWER
B) Malonil-CоА
Question 7
Which of the following statements about ketone bodies = wrong?
A) substrate for the synthesis of ketone bodies is acetyl CoA, obtained from the oxidative
decarboxylation of pyruvate
B) ketone bodies are acetoacetate, β-hydroxybutyrate and acetone, as acetone is product of
acetoacetate degradation.
C) ketone bodies are an energy source alternative of glucose
D) the concentration of the β-hydroxybutyrate in the blood is usually higher than that of the
acetoacetate
CORRECT ANSWER
A) substrate for the synthesis of ketone bodies is acetyl CoA, obtained from the oxidative
decarboxylation of pyruvate
Question 8
3
AND VERIFIED ANSWERS |BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
Which of the following types of lipids is not a component of the membrane structures?
A) cholesterol
B) triacylglycerols
C) cardiolipins
D) phosphatidylethanolamine
CORRECT ANSWER
B) triacylglycerols
Question 2
Which of the following lipids are glycolipids?
1. sphingomyelins
2. gangliosides
3. cephaline
4. cerebrosides
CORRECT ANSWER
C) 2+4
Question 3
Which of the following statements about the activation of FA before their inclusion in β
oxidation = wrong?
1
,A) activation of fatty acids is by binding their carboxyl group w/ coenzyme A and turning
them into acyl CoA derivatives
B) activation of the FA takes place in the mitochondrial matrix
C) activation of the FA takes place in the ER
D) long chain fatty acids are activated
CORRECT ANSWER
B) activation of the FA takes place in the mitochondrial matrix
Question 4
Which of the following pairs of vitamins act as coenzymes in the β-oxidation of fatty acids
with an odd number of carbon atoms?
A) vit. B1 and folic acid
B) biotin and vit. B12
C) folic acid and biotin
D) vit.В12 and vit.В1
CORRECT ANSWER
B) biotin and vit. B12
Question 5
Which of the following shuttle mechanisms is involved in the transfer of activated FA from
the cytosol into the mitochondria?:
a) malate-aspartate
B) glycerol-phosphate
C) acyl-carnitine
D) none of the above mentioned
CORRECT ANSWER
2
, C) acyl-carnitine
Question 6
Which of the following metabolites is an allosteric inhibitor of the regulatory enzyme of β
oxidation?
A) Propionyl-CoA
B) Malonil-CоА
C) Butyryl-CoA
D) none of the above mentioned
CORRECT ANSWER
B) Malonil-CоА
Question 7
Which of the following statements about ketone bodies = wrong?
A) substrate for the synthesis of ketone bodies is acetyl CoA, obtained from the oxidative
decarboxylation of pyruvate
B) ketone bodies are acetoacetate, β-hydroxybutyrate and acetone, as acetone is product of
acetoacetate degradation.
C) ketone bodies are an energy source alternative of glucose
D) the concentration of the β-hydroxybutyrate in the blood is usually higher than that of the
acetoacetate
CORRECT ANSWER
A) substrate for the synthesis of ketone bodies is acetyl CoA, obtained from the oxidative
decarboxylation of pyruvate
Question 8
3
