Cell Transport

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 use of energy, moving down the concentration gradient.

Front

Define diffusion.

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane.

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 isotonic solution?

Back

An isotonic solution has the same concentration of solutes as the cell, resulting in no net movement of water.

Front

Define phagocytosis.

Back

Phagocytosis is the process by which a cell engulfs solid particles, often referred to as 'cell eating'.

Front

Define pinocytosis.

Back

Pinocytosis is the process by which a cell engulfs liquid particles, often referred to as 'cell drinking'.

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.