What are the total number of amino acids found in a haemoglobin molecule?
Correct answer: C. 574
- A. 575
- B. 576
- C. 574
- D. 573
Explanation
Correct option: C (fact) (There are 574 amino acids in a haemoglobin molecule).A haemoglobin molecule consists of a total of 574 amino acids. It is made up of four protein chains: two alpha chains and two beta chains. Each alpha chain consists of 141 amino acids, and each beta chain consists of 146 amino acids. Therefore, the total number of amino acids in a haemoglobin molecule is 2 * 141 (alpha chains) + 2 * 146 (beta chains) = 282 + 292 = 574. Hence, option C is the correct answer.
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