Question

Which amino acid is used to synthesize Nitric oxide ?

• A. Glycine
• B. Arginine
• C. Tyrosine
• D. Threonine

Answer 1

The Correct Option is B

In biochemistry, the synthesis of nitric oxide (NO), a key signaling molecule in various physiological processes, occurs through the oxidation of a specific amino acid. This process is catalyzed by the enzyme nitric oxide synthase (NOS). Below is the detailed explanation:

Step 1: Identify the enzyme involved.
The enzyme responsible for the synthesis of nitric oxide is Nitric Oxide Synthase (NOS).

Step 2: Determine the substrate.
Nitric Oxide Synthase catalyzes the conversion of L-Arginine into nitric oxide.

Step 3: Verify the synthesis process.
During the reaction, L-Arginine is oxidized to produce L-Citrulline and nitric oxide (NO) as products.

Therefore, the amino acid used to synthesize nitric oxide is:

Result: Arginine