Cell Transport

Front

What does it mean that the cell membrane is selectively permeable?

Back

Certain things can enter while others cannot.

Front

What is a chemoautotroph?

Back

An organism that gets its energy from various chemicals.

Front

What are heterotrophs?

Back

Organisms that cannot make their own food and must obtain energy from external sources.

Front

What is diffusion?

Back

The process in which molecules move from an area of high concentration to an area of low concentration across a selectively permeable membrane.

Front

What is the cell membrane?

Back

A biological membrane that separates and protects the interior of all cells from the outside environment.

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What is active transport?

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is facilitated diffusion?

Back

The process of spontaneous passive transport of molecules or ions across a biological membrane via specific transmembrane integral proteins.

Front

What is the function of the cell wall?

Back

To provide structure and protection to plant cells, fungi, and bacteria.

Front

What are autotrophs?

Back

Organisms that can produce their own food from inorganic substances.