H Homeostasis in Cells Vocab

Front

What is a vesicle?

Back

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

Front

What are molecules?

Back

Groups of two or more atoms held together by chemical bonds.

Front

What is diffusion?

Back

Movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is active transport?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a lipid bilayer?

Back

A double layer of phospholipids that makes up the cell membrane.

Front

What is a selectively permeable membrane?

Back

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

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is concentration gradient?

Back

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

Front

What is equilibrium in terms of concentration?

Back

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