H Homeostasis in Cells Vocab

Front

What is facilitated diffusion?

Back

A process of passive transport using transport proteins.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a distance.

Front

What is active transport?

Back

An energy-requiring process that moves material across a cell membrane against a concentration gradient from low to high concentration.

Front

What is a vesicle?

Back

A small structure within a cell, consisting of fluid enclosed by a lipid bilayer.

Front

What is passive transport?

Back

A type of transport that requires NO energy and moves molecules from high to low concentration.

Front

What is osmosis?

Back

The movement of water molecules through a semipermeable membrane.

Front

What is diffusion?

Back

The process of spreading out molecules from an area of high concentration to an area of low concentration.

Front

What is a semipermeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What is equilibrium in the context of concentration?

Back

A state where the concentration of a substance is equal throughout a space.

Front

What role do transport proteins play in facilitated diffusion?

Back

They help move substances across the cell membrane without using energy.