CHEM 210 Module 3 | Biochemistry Exam Q&A | Portage
Learning
Here are 100 original practice questions for CHEM 210 Module 3 | Biochemistry..
They cover lipid metabolism, fatty acid oxidation, ketogenesis, fatty acid synthesis,
cholesterol metabolism, lipoproteins, and related clinical applications.
Question 1:
Which of the following is the primary storage form of fatty acids in the body?
A. Phospholipids
B. Triglycerides
C. Cholesterol
D. Free fatty acids
Correct answer: B
Rationale: Triglycerides are the primary storage form of fatty acids in adipose tissue.
Question 2:
Triglycerides are composed of:
A. Glycerol and three fatty acids
B. Glycerol and three amino acids
C. Three glycerols and one fatty acid
D. Three sugars and phosphate
Correct answer: A
Rationale: Triglycerides consist of glycerol esterified to three fatty acids.
Question 3:
Saturated fatty acids contain:
A. No carbon-carbon double bonds
B. At least one double bond
C. Only triple bonds
D. Aromatic rings
Correct answer: A
Rationale: Saturated fatty acids have only single bonds in their hydrocarbon chain.
,Question 4:
Unsaturated fatty acids contain:
A. At least one carbon-carbon double bond
B. Only single bonds
C. Only triple bonds
D. No carbon
Correct answer: A
Rationale: Unsaturated fatty acids contain one or more double bonds.
Question 5:
Which fatty acid is essential and cannot be synthesized by humans?
A. Palmitic acid
B. Stearic acid
C. Linoleic acid
D. Oleic acid
Correct answer: C
Rationale: Linoleic acid is an essential omega-6 fatty acid.
Question 6:
Which fatty acid is an essential omega-3 fatty acid?
A. Palmitic acid
B. Alpha-linolenic acid
C. Oleic acid
D. Stearic acid
Correct answer: B
Rationale: Alpha-linolenic acid is an essential omega-3 fatty acid.
Question 7:
Beta-oxidation of fatty acids occurs in the:
A. Cytoplasm
B. Mitochondrial matrix
C. Nucleus
D. Golgi apparatus
Correct answer: B
Rationale: Beta-oxidation occurs in the mitochondrial matrix.
, Question 8:
Fatty acids must be activated to which form before beta-oxidation?
A. Fatty acyl-CoA
B. Fatty acid
C. Triglyceride
D. Cholesterol
Correct answer: A
Rationale: Fatty acids are activated to fatty acyl-CoA before oxidation.
Question 9:
The carnitine shuttle transports fatty acyl-CoA into the:
A. Cytoplasm
B. Mitochondrial matrix
C. Nucleus
D. Golgi apparatus
Correct answer: B
Rationale: Carnitine transports long-chain fatty acyl-CoA into mitochondria.
Question 10:
Which enzyme is inhibited by malonyl-CoA?
A. CPT-1
B. Acyl-CoA dehydrogenase
C. Thiolase
D. Enoyl-CoA hydratase
Correct answer: A
Rationale: Malonyl-CoA inhibits CPT-1, preventing fatty acid oxidation when synthesis is
active.
Question 11:
Each cycle of beta-oxidation produces:
A. Acetyl-CoA, NADH, and FADH₂
B. Glucose and ATP
C. Pyruvate and lactate
D. Amino acids and urea
Correct answer: A
Rationale: Each beta-oxidation cycle yields acetyl-CoA, NADH, and FADH₂.
Learning
Here are 100 original practice questions for CHEM 210 Module 3 | Biochemistry..
They cover lipid metabolism, fatty acid oxidation, ketogenesis, fatty acid synthesis,
cholesterol metabolism, lipoproteins, and related clinical applications.
Question 1:
Which of the following is the primary storage form of fatty acids in the body?
A. Phospholipids
B. Triglycerides
C. Cholesterol
D. Free fatty acids
Correct answer: B
Rationale: Triglycerides are the primary storage form of fatty acids in adipose tissue.
Question 2:
Triglycerides are composed of:
A. Glycerol and three fatty acids
B. Glycerol and three amino acids
C. Three glycerols and one fatty acid
D. Three sugars and phosphate
Correct answer: A
Rationale: Triglycerides consist of glycerol esterified to three fatty acids.
Question 3:
Saturated fatty acids contain:
A. No carbon-carbon double bonds
B. At least one double bond
C. Only triple bonds
D. Aromatic rings
Correct answer: A
Rationale: Saturated fatty acids have only single bonds in their hydrocarbon chain.
,Question 4:
Unsaturated fatty acids contain:
A. At least one carbon-carbon double bond
B. Only single bonds
C. Only triple bonds
D. No carbon
Correct answer: A
Rationale: Unsaturated fatty acids contain one or more double bonds.
Question 5:
Which fatty acid is essential and cannot be synthesized by humans?
A. Palmitic acid
B. Stearic acid
C. Linoleic acid
D. Oleic acid
Correct answer: C
Rationale: Linoleic acid is an essential omega-6 fatty acid.
Question 6:
Which fatty acid is an essential omega-3 fatty acid?
A. Palmitic acid
B. Alpha-linolenic acid
C. Oleic acid
D. Stearic acid
Correct answer: B
Rationale: Alpha-linolenic acid is an essential omega-3 fatty acid.
Question 7:
Beta-oxidation of fatty acids occurs in the:
A. Cytoplasm
B. Mitochondrial matrix
C. Nucleus
D. Golgi apparatus
Correct answer: B
Rationale: Beta-oxidation occurs in the mitochondrial matrix.
, Question 8:
Fatty acids must be activated to which form before beta-oxidation?
A. Fatty acyl-CoA
B. Fatty acid
C. Triglyceride
D. Cholesterol
Correct answer: A
Rationale: Fatty acids are activated to fatty acyl-CoA before oxidation.
Question 9:
The carnitine shuttle transports fatty acyl-CoA into the:
A. Cytoplasm
B. Mitochondrial matrix
C. Nucleus
D. Golgi apparatus
Correct answer: B
Rationale: Carnitine transports long-chain fatty acyl-CoA into mitochondria.
Question 10:
Which enzyme is inhibited by malonyl-CoA?
A. CPT-1
B. Acyl-CoA dehydrogenase
C. Thiolase
D. Enoyl-CoA hydratase
Correct answer: A
Rationale: Malonyl-CoA inhibits CPT-1, preventing fatty acid oxidation when synthesis is
active.
Question 11:
Each cycle of beta-oxidation produces:
A. Acetyl-CoA, NADH, and FADH₂
B. Glucose and ATP
C. Pyruvate and lactate
D. Amino acids and urea
Correct answer: A
Rationale: Each beta-oxidation cycle yields acetyl-CoA, NADH, and FADH₂.
