Question

The building block of proteins and enzymes is

• A. Amino acids
• B. Steroids
• C. Mineralocorticoids
• D. None of the above

Answer 1

Answer: (A)

Amino acids

Amino acids are organic acids with carboxylic group -COOH and amino group −NH${}_2$. They are attached to alpha carbon or next carbon to the carboxylic group. This provides an acidic property to the amino acids. While amino group gives it a basic property. Amino acids are building block of proteins and enzymes. Steroid are complex compounds of cell membrane and are essential for the production of hormone-in animals.

Thus, the correct answer is option A.