2022 Cell Transport

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy in the form of ATP.

Front

Which diagram represents active transport?

Back

Diagram 3 represents active transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

How do embedded proteins function in the plasma membrane?

Back

Embedded proteins help the plasma membrane by allowing certain kinds of molecules to enter or leave the cell.

Front

What is the role of the cell membrane?

Back

The cell membrane regulates what can enter and leave the cell, maintaining homeostasis.

Front

What happens to cells when a person drinks seawater?

Back

Drinking seawater causes water to move out of the cells, leading to cell shrinkage.

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 concentration gradient.

Front

What are the types of passive transport?

Back

The types of passive transport include simple diffusion, facilitated diffusion, and osmosis.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is a concentration gradient?

Back

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