Selectively (differentially ) permeable membrane is that which allows

Options

A. all the solute particles to pass through it
B. none of the solute particles to pass through it
C. some of the solute particles to pass through it and prevent others
D. all the solute particles to pass through it in the beginning for 5-10 minutes , then the rate declines

Answer

**Step-by-Step Solution:**

1. **Understanding Selectively Permeable Membrane:**
- A selectively permeable membrane is designed to allow certain substances to pass through while restricting others. This characteristic is essential for maintaining homeostasis in cells.

2. **Definition of Terms:**
- **Permeable:** A membrane that allows all substances to pass through.
- **Impermeable:** A membrane that does not allow any substances to pass through.
- **Semi-permeable:** A membrane that allows some substances to pass while blocking others.

3. **Evaluating the Options:**
- **Option A:** "All the solute particles to pass through it."
- This describes a fully permeable membrane, which is incorrect for a selectively permeable membrane.
- **Option B:** "None of the solid particles to pass through it."
- This describes an impermeable membrane, which is also incorrect.
- **Option C:** "Some of the solute particles to pass through it and prevent the others."
- This correctly describes a selectively permeable membrane, as it allows certain particles to pass while blocking others.
- **Option D:** "All the solid particles to pass through it in the beginning for 5 to 10 minutes then the rate declines."
- This suggests a temporary permeability, which is not characteristic of a selectively permeable membrane.

4. **Conclusion:**
- Based on the evaluation of the options, the correct answer is **Option C:** "Some of the solute particles to pass through it and prevent the others." This accurately reflects the function of a selectively permeable membrane.