Question

osmosis is the movement of water from high water concentration to low water concentration across a semi - permeable membrane.
model 2 - osmosis in plant and animal cells

1. using your knowledge of cells, which type of cells in model 2 - animal or plant - have

a. a selectively permeable membrane?
b. a permeable, rigid cell wall?

1. the arrows in model 2 show movement of water into and out of the cells. what does the thickness of the arrow indicate?

Explanation:

a. Both animal and plant cells have a selectively permeable membrane. The cell membrane (plasma membrane) in all cells (animal and plant) controls the movement of substances in and out of the cell, allowing some substances to pass through while restricting others.
b. Plant cells have a permeable, rigid cell wall. The cell wall in plant cells is made of cellulose and provides structural support and protection. It is permeable to water and small molecules.
For question 12, the thickness of the arrow in Model 2 indicates the relative rate of water movement. A thicker arrow means a higher rate of water movement (either into or out of the cell) compared to a thinner arrow.

Answer:

a. Both animal and plant cells.
b. Plant cells.

1. The relative rate of water movement.