Lipid Metabolism Practice Questions PDF

**Lipid Metabolism MCQs** 1. **Which organ is the primary site of lipid metabolism?** - A\) Kidney - B\) Liver - C\) Brain - D\) Pancreas - **Answer:** B) Liver 2. **Beta-oxidation occurs in the:** - A\) Cytoplasm - B\) Mitochondria - C\) G...

**Lipid Metabolism MCQs** 1. **Which organ is the primary site of lipid metabolism?** - A\) Kidney - B\) Liver - C\) Brain - D\) Pancreas - **Answer:** B) Liver 2. **Beta-oxidation occurs in the:** - A\) Cytoplasm - B\) Mitochondria - C\) Golgi apparatus - D\) Nucleus - **Answer:** B) Mitochondria 3. **The end product of beta-oxidation is:** - A\) Glucose - B\) Acetyl-CoA - C\) Glycerol - D\) Fatty acid - **Answer:** B) Acetyl-CoA 4. **Which enzyme catalyzes the first step in fatty acid synthesis?** - A\) Acetyl-CoA carboxylase - B\) Fatty acid synthase - C\) Citrate lyase - D\) Lipase - **Answer:** A) Acetyl-CoA carboxylase 5. **Ketogenesis occurs primarily in the:** - A\) Kidney - B\) Liver - C\) Muscle - D\) Adipose tissue - **Answer:** B) Liver 6. **Which molecule is a precursor for the synthesis of ketone bodies?** - A\) Acetyl-CoA - B\) Pyruvate - C\) Citrate - D\) Malonyl-CoA - **Answer:** A) Acetyl-CoA 7. **What is the storage form of lipids in adipose tissue?** - A\) Free fatty acids - B\) Cholesterol - C\) Triglycerides - D\) Phospholipids - **Answer:** C) Triglycerides 8. **During fasting, lipolysis is stimulated by:** - A\) Insulin - B\) Glucagon - C\) Leptin - D\) Aldosterone - **Answer:** B) Glucagon 9. **The enzyme responsible for breaking down triglycerides in adipose tissue is:** - A\) Hormone-sensitive lipase - B\) Pancreatic lipase - C\) Lipoprotein lipase - D\) Acyl-CoA synthetase - **Answer:** A) Hormone-sensitive lipase 10. **Which lipid is a major component of cell membranes?** - A\) Triglycerides - B\) Cholesterol - C\) Phospholipids - D\) Fatty acids - **Answer:** C) Phospholipids 11. **Cholesterol is a precursor for:** - A\) Triglycerides - B\) Bile acids - C\) Fatty acids - D\) Glucose - **Answer:** B) Bile acids 12. **Which pathway is responsible for the synthesis of lipids?** - A\) Glycolysis - B\) Lipogenesis - C\) Beta-oxidation - D\) Ketogenesis - **Answer:** B) Lipogenesis 13. **The transport of fatty acids into mitochondria requires:** - A\) NADH - B\) Carnitine - C\) ATP - D\) Coenzyme A - **Answer:** B) Carnitine 14. **Fatty acids are activated before oxidation by the addition of:** - A\) Coenzyme A - B\) ATP - C\) NADH - D\) Carnitine - **Answer:** A) Coenzyme A 15. **Which of the following is NOT a ketone body?** - A\) Acetoacetate - B\) Beta-hydroxybutyrate - C\) Acetone - D\) Citrate - **Answer:** D) Citrate 16. **Which hormone promotes lipid storage?** - A\) Glucagon - B\) Insulin - C\) Epinephrine - D\) Cortisol - **Answer:** B) Insulin 17. **Which process synthesizes fatty acids?** - A\) Lipolysis - B\) Beta-oxidation - C\) Lipogenesis - D\) Glycolysis - **Answer:** C) Lipogenesis 18. **Ketone bodies are utilized as an energy source by:** - A\) The liver - B\) Adipose tissue - C\) The brain - D\) Red blood cells - **Answer:** C) The brain 19. **Which pathway oxidizes long-chain fatty acids in peroxisomes?** - A\) Lipogenesis - B\) Ketogenesis - C\) Beta-oxidation - D\) Alpha-oxidation - **Answer:** C) Beta-oxidation 20. **Which hormone increases fatty acid synthesis?** - A\) Insulin - B\) Glucagon - C\) Cortisol - D\) Epinephrine - **Answer:** A) Insulin