Question

A basic protein contains more basic amino acids such as ______.

• A. Lysine and methionine
• B. Methionine and arginine
• C. Arginine and lysine
• D. Valine and lysine

Hint:

The basic amino acids are lysine, arginine and histidine.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
A basic protein is rich in amino acids whose side chains carry an extra amino group or positive charge.

Step 2: Basic amino acids
The basic amino acids are lysine, arginine and histidine.
Methionine and valine have uncharged non-polar side chains.

Step 3: Conclusion
So a basic protein contains more arginine and lysine, as in histones.

Final Answer:
A basic protein is rich in arginine and lysine, option (C). \[ \boxed{\text{(C) }\text{Arginine and lysine}} \]