Multiple choice

Which of the following statements is incorrect?

  1. Insulin is secreted by the by β-cells islets of Langerhans.

  2. Human insulin is a polypeptide of 51 amino acids arranged in a single chain.

  3. Banting and Best isolated insulin from dog’s pancreas.

  4. Insulin regulates carbohydrate metabolism.

  5. Humulin is synthetic human insulin.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Human insulin is a polypeptide of 51 amino acids arranged in two chains (A and B) bearing 21 and 30 amino acids, respectively.

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