Cell Membrane and Transport

Front

What is the primary function of the cell membrane?

Back

The cell membrane maintains homeostasis/equilibrium by controlling what substances may enter or leave the cell.

Front

What type of transport requires energy to move substances across a cell membrane?

Back

Active transport.

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of high water concentration to an area of low water concentration.

Front

What does passive transport mean?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of any substance from an area of high concentration to an area of low concentration, while osmosis specifically refers to the movement of water.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane help transport substances, act as receptors, and provide structural support.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is the function of the cell wall?

Back

The cell wall provides structural support and protection to plant cells, but it is not involved in transport.