The total number of amino acids the alpha chain of insulin are:
Correct answer: B. 21
- A. 20
- B. 21
- C. 30
- D. 51
Explanation
The correct answer is B: 21. The alpha chain of insulin is composed of 21 amino acids, while the beta chain contains 30 amino acids. Together, they make up the total of 51 amino acids in the insulin molecule. The other options incorrectly identify either the number of amino acids in the alpha chain or confuse it with the beta chain or the total number of amino acids in insulin.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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