In proteins, there are on the average _ amino acid units for each turn in helix:
Correct answer: B. 27
- A. 25
- B. 27
- C. 21
- D. 23
Explanation
Explanation:In proteins, there are on the average 27 amino acid units for each turn in helix. In an alpha-helix structure, there are, on average, 3.6 amino acid units for each turn. Since there are approximately 7.5 turns in a complete alpha-helix, there are on average 27 amino acid units per helix.
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About Classification of Proteins
Proteins are classified by composition as simple, conjugated and derived proteins, and by shape as fibrous or globular proteins. The topic relates these classes to examples such as albumin, keratin, collagen, haemoglobin and casein, while distinguishing structural proteins from proteins with transport, catalytic or regulatory roles.
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