Molecular separation of two proteins with same charge can be done by:
**Core Concept**
Molecular separation of proteins, often required in various biological and biochemical applications, can be achieved through different techniques based on distinct properties of proteins. Since the question mentions proteins with the same charge, it points towards techniques that differentiate proteins based on other characteristics.
**Why the Correct Answer is Right**
The correct method for separating proteins with the same charge is gel electrophoresis. This process involves applying an electric field across a gel matrix, which causes the proteins to migrate based on their size and shape. Smaller proteins move faster towards the positive electrode, while larger proteins move more slowly. The size-based separation is possible because the electric field interacts with the proteins in a way that is independent of their charge, allowing for the separation of proteins with the same charge.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
A key point to remember when considering protein separation techniques is that gel electrophoresis can be modified to separate proteins based on other properties, such as charge (isoelectric focusing) or binding affinity to specific molecules (e.g., affinity chromatography). This flexibility makes gel electrophoresis a versatile tool in biochemical research and clinical diagnostics.
**Correct Answer: C. Gel electrophoresis.**