Which of the following is true about amino acids?

Question

Ten amino acids are combined to make all of the proteins that humans need.

Humans make all of the amino acids required for protein synthesis.

A typical protein in the human body contains 2,000–3,000 amino acids.

Humans only make 10 amino acids and need to get the remaining essential amino acids from food.

Answer 1

The statement that is true about amino acids is:

Humans only make 10 amino acids and need to get the remaining essential amino acids from food.

To elaborate:

• Humans require 20 different amino acids for protein synthesis, out of which 9 are essential amino acids that must be obtained through the diet because the body cannot synthesize them.
• The human body can synthesize the other 11 amino acids, which are considered non-essential.
• The size of a typical protein can vary widely, but while many proteins may contain 2,000–3,000 amino acids, this is not a fixed number and can differ greatly among different proteins. Thus, saying "a typical protein contains 2,000–3,000 amino acids" is not universally true.

So, the last point is the most accurate among the options provided.