Cell Transport Test

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves from the inside of the cell to the solution, causing the cell to shrink.

Front

Define osmosis.

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

How does water move into plant root cells when the concentration of water is higher in the soil?

Back

Water moves into root cells of a plant by osmosis.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance from one location to another.

Front

What is passive transport?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required for active transport to move substances against their concentration gradient.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solutes from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water.

Front

What occurs during simple diffusion?

Back

During simple diffusion, molecules move directly through the cell membrane from an area of higher concentration to an area of lower concentration without the need for energy.