In the first reaction of catabolism, _ free the _.
Correct answer: B. Protein, amino acids
- A. Fatty acids, polysaccharides
- B. Protein, amino acids
- C. Lipids, glucose
- D. None of these options is correct
Explanation
Fatty acids do not catabolize to form polysaccharides. Lipids can be catabolized to fatty acids and glycerol, not glucose. Proteins do catabolise to amino acids hence the answer is B.
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Proteins are polymers of amino acids joined by peptide bonds, and their function depends on primary, secondary, tertiary and quaternary structure. The topic covers fibrous and globular proteins, enzymes, antibodies, hormones and transport proteins, as well as denaturation by heat or extreme pH.
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