Cell Transport

Front

What is diffusion and why is it important to cells?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. It is important to cells because it allows them to take in materials without using energy.

Front

Define osmosis in the context of cell transport.

Back

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

Front

What is passive transport and does it require energy?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy. It does not require energy.

Front

What does it mean for a cell membrane to be permeable?

Back

A permeable cell membrane has pores that allow certain materials to pass through.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state when the concentration of water inside and outside of a cell is equal.

Front

What are the main types of cell transport?

Back

The main types of cell transport are passive transport (including diffusion and osmosis) and active transport.

Front

Explain the difference between active transport and passive transport.

Back

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

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, aiding in both passive and active transport.

Front

What is the significance of concentration gradients in cell transport?

Back

Concentration gradients drive the movement of substances during diffusion and osmosis, as substances move from areas of higher concentration to areas of lower concentration.

Front

How does temperature affect the rate of diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, which can increase the rate of diffusion.

Tags

NGSS.MS-PS1-4