Cell Transport Test

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells as water moves into it.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of it.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space.

Front

What occurs at the bottom of a cup with dye?

Back

There is a low concentration of dye at the bottom of the cup.

Front

What is the result of placing an egg with a dissolved shell in water for 48 hours?

Back

The egg gains water and swells.

Front

What is the role of a semi-permeable membrane in osmosis?

Back

A semi-permeable membrane allows water to pass through while preventing certain solutes from crossing.

Front

Define diffusion.

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.