Active and passive transport practice

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 is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the need for energy, following the concentration gradient.

Front

Define osmosis.

Back

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

Front

What does 'high concentration area' mean?

Back

A high concentration area refers to a region where particles are tightly packed together.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until evenly distributed.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is endocytosis?

Back

Endocytosis is a process by which cells engulf substances from their external environment, bringing them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials to the outside environment.

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 happens to a cell in a hypertonic solution?

Back

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