Find out the incorrect statement.

Options

A. The movement of water across a semipermeable membrane is affected by the amount of substances dissolved in it.
B. Membranes are made of organic molecules like proteins and lipids
C. Molecules soluble in organic solvents can easily pass through the membrane.
D. Cell walls contain chitin sugar in plants.

Explanation

To find the incorrect statement from the options provided, we will analyze each statement one by one:

1. **Statement 1**: "The movement of water across the semi-permeable membrane is affected by the amount of substance dissolved in it."
- This statement is correct. The movement of water (osmosis) is influenced by the concentration of solutes in the solution. If there are more solutes, water will move towards that area to balance the concentration.

2. **Statement 2**: "Membranes are made of organic molecules like proteins and lipids."
- This statement is also correct. Biological membranes are primarily composed of a phospholipid bilayer with embedded proteins, which are indeed organic molecules.

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