2.2.2 Cell Transport

Front

What is an isotonic environment?

Back

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

Front

What does hypotonic mean in relation to cell transport?

Back

Hypotonic refers to a solution that has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

Define semi-permeable membrane.

Back

A semi-permeable membrane allows only certain substances to pass through while blocking others.

Front

What is required for active transport?

Back

Active transport requires energy (ATP) to move materials against their concentration gradient, from low to high concentration.

Front

What happens to a cell in a hypertonic solution?

Back

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

Front

Explain the process of osmosis.

Back

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

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their gradient.

Front

What is diffusion?

Back

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

Front

How does a cell maintain homeostasis?

Back

A cell maintains homeostasis by regulating the movement of substances in and out through its membrane.

Front

What is the role of ATP in cellular transport?

Back

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