METABOLISM 7 TH EDITION GROPPER EXAM
QUESTIONS AND CORRECT ANSWERS (verified
answers) Q & A 2026 /INSTANT DOWNLOAD PDF
1. Which of the following best describes metabolism?
A. Only energy production
B. Chemical reactions that maintain life
C. Digestion of food only
D. Absorption of nutrients
Answer: B
Metabolism includes all biochemical reactions in the body, including both anabolic
and catabolic processes.
2. Which process is anabolic?
A. Glycolysis
B. Lipolysis
C. Protein synthesis
D. Beta-oxidation
Answer: C
Anabolism builds complex molecules, and protein synthesis forms proteins from
amino acids.
3. ATP is primarily used for:
A. DNA storage
B. Energy transfer
,C. Hormone synthesis
D. Oxygen transport
Answer: B
ATP serves as the main energy currency of the cell, transferring energy for cellular
work.
4. Which organ is central to nutrient metabolism?
A. Heart
B. Liver
C. Kidney
D. Lung
Answer: B
The liver regulates carbohydrate, lipid, and protein metabolism.
5. Glycolysis occurs in the:
A. Nucleus
B. Mitochondria
C. Cytoplasm
D. Ribosome
Answer: C
Glycolysis takes place in the cytoplasm and does not require oxygen.
6. The end product of glycolysis under anaerobic conditions is:
A. Pyruvate
B. Lactate
C. Acetyl-CoA
D. Glucose
,Answer: B
Without oxygen, pyruvate is converted to lactate.
7. Which vitamin is essential for energy metabolism as part of coenzymes?
A. Vitamin C
B. Vitamin D
C. B vitamins
D. Vitamin K
Answer: C
B vitamins act as coenzymes in energy-yielding metabolic pathways.
8. Insulin primarily promotes:
A. Glucose release
B. Glucose uptake
C. Protein breakdown
D. Fat oxidation
Answer: B
Insulin facilitates glucose uptake into cells and storage.
9. Glucagon has the opposite effect of insulin by:
A. Increasing glycogen synthesis
B. Promoting glucose release
C. Enhancing fat storage
D. Reducing blood sugar
Answer: B
Glucagon increases blood glucose by stimulating glycogen breakdown.
, 10. The citric acid cycle occurs in the:
A. Cytoplasm
B. Nucleus
C. Mitochondria
D. Endoplasmic reticulum
Answer: C
The citric acid (Krebs) cycle occurs in the mitochondrial matrix.
11. Which macronutrient yields the most energy per gram?
A. Carbohydrates
B. Protein
C. Fat
D. Alcohol
Answer: C
Fat provides 9 kcal/g, more than carbohydrates or protein (4 kcal/g).
12. Beta-oxidation refers to:
A. Glucose synthesis
B. Fatty acid breakdown
C. Protein formation
D. DNA replication
Answer: B
Beta-oxidation breaks fatty acids into acetyl-CoA units.
13. Essential amino acids are those that:
A. Can be synthesized in the body
B. Must be obtained from diet