Fatty acids are an important source of energy. They are stored as triglycerides or fats. Fatty acid catabolism is a metabolic process by which our body utilises the energy stored in triglycerides. One gram of fatty acid yields approximately 9 kcal of energy. The fat present in our food is digested by lipase secreted by the pancreas in the duodenum. Triglycerides are converted to fatty acid and glycerol. Long-chain fatty acids undergo 𝜷-oxidation in the mitochondrial matrix, forming acetyl CoA.
1. The free fatty acids are transported by blood associated with
(a) β -lipoprotein
(b) a fatty acid-binding protein
(d) none of the above
2. Where are the enzymes for β-oxidation present?
(d) Golgi apparatus
3. Fats after absorption, present in the circulation as
4. Which one of the following is an essential fatty acid?
(a) Linolenic acid
(b) Palmitic acid
(c) Linoleic acid
(d) both (a) and (c)
5. Which of the following is a saturated fatty acid?
(a) Linoleic acid
(b) Erucic acid
(c) Palmitic acid
(d) Oleic acid
6. Which of the following undergoes β-oxidation?
(a) Polyunsaturated fatty acids
(b) Saturated fatty acids
(c) Monounsaturated fatty acids
(d) All of the above
7. Where are ketone bodies synthesized?
(d) Adipose tissues
8. 𝜶- oxidation of fatty acids mostly occurs in
(b) adipose tissues
9. The long-chain fatty acids get transported through the inner mitochondrial membrane
(a) as acyl-CoA derivative
(c) as carnitine derivative
(d) require sodium-dependent carrier
10. Where do the long-chain fatty acids get first activated?
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