Which of the following biological membrane is semi-permeable?

Options

A. Fish and animal bladders
B. Egg membrane
C. Plasma membrane of cell
D. all of these.

Answer

To determine which of the following biological membranes is semi-permeable, we need to analyze each option provided:

1. **Fish and Animal Bladder**:
- The bladder has a membrane that allows water (solvent) to pass through while restricting the passage of solutes. This characteristic makes it semi-permeable.

2. **Egg Membrane**:
- The egg membrane also exhibits semi-permeability. It allows water to pass through but prevents larger solute molecules from crossing, thus maintaining the internal environment of the egg.

3. **Plasma Membrane of Cells**:
- The plasma membrane is well-known for its selective permeability. It allows certain substances (like water) to enter or exit the cell while blocking others (like ions or larger molecules), making it semi-permeable as well.

4. **All of These**:
- Since all three membranes mentioned (fish and animal bladder, egg membrane, and plasma membrane) are semi-permeable, this option is also valid.

Based on the analysis of each option, the correct answer is **option 4: All of these**. All the membranes listed are semi-permeable, allowing certain molecules to pass while restricting others.