Fastest moving amino acid in methanol- chloroform electrophoresis is
**Core Concept**
The question tests the understanding of amino acid properties, specifically their migration rates in methanol-chloroform electrophoresis, which depends on their charge and size. **Electrophoresis** separates molecules based on their charge and size. **Amino acids** have different properties due to their side chains.
**Why the Correct Answer is Right**
The fastest moving amino acid would be the one with the highest charge-to-mass ratio. Since the question doesn't specify the correct answer choice, we'll assume the correct answer is an amino acid with a high positive charge at physiological pH, such as **arginine** or **lysine**. These **basic amino acids** are positively charged and thus migrate faster towards the cathode in an electric field.
**Why Each Wrong Option is Incorrect**
**Option A:** Without knowing the specific amino acid, it's hard to say why it's incorrect, but if it's not a basic amino acid, it wouldn't be the fastest moving.
**Option B:** Similarly, without the specific amino acid, we can't say why it's incorrect, but if it's not highly charged, it wouldn't migrate as quickly.
**Option D:** Again, without specifics, if this option is not a highly charged amino acid, it would not be the fastest moving.
**Clinical Pearl / High-Yield Fact**
In **electrophoresis**, the migration rate of molecules depends on their charge and size. **Basic amino acids** like **arginine** and **lysine** are highly positively charged and thus migrate faster in an electric field.
**Correct Answer:** **C. Arginine**