Which of the following is not a steroid? A. insulin B. androgens C. estrogens D. cholesterol E. All of the above are steroids

OptionA, Insulin

Explanation:

Steroids are organic compound having four fused ring arranged in specific configuration. The four fused rings are composed of 17 carbons.

Most common example of steroids includes Cholesterol, steroids hormones and bile salts.

Among given options, all are steroids except insulin.

Insulin is an endocrine hormone and released from pancreas. It is a non-steroid hormone.

Androgens and estrogens are sex hormones whereas cholesterol is a waxy substance present in blood plasma and animal tissues.