Cellular Transport and Osmosis--TEST--biology

Front

What is the molecule that provides energy for active transport?

Back

ATP (Adenosine Triphosphate) is the molecule that provides energy for active transport.

Front

What type of diffusion involves a solute traveling down its concentration gradient using a protein channel?

Back

Facilitated diffusion is the process where a solute travels down its concentration gradient using a protein channel.

Front

Are osmosis, facilitated diffusion, and diffusion all types of passive transport?

Back

TRUE. Osmosis, facilitated diffusion, and diffusion are all types of passive transport.

Front

What do we call a cell membrane that only lets certain substances in and out?

Back

Semi-Selectively Permeable. This term describes a membrane that selectively allows certain substances to pass.

Front

What are two types of passive transport?

Back

Osmosis and diffusion are two types of passive transport.

Front

Define osmosis.

Back

Osmosis is the movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is the difference between active transport and passive transport?

Back

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

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of that substance.

Front

What role do protein channels play in cellular transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, especially during facilitated diffusion.