Cell Transport

Front

What is facilitated diffusion?

Back

A type of passive transport that uses protein channels to help molecules cross the cell membrane without using energy.

Front

What is the primary function of the cell membrane?

Back

To maintain homeostasis by controlling what enters and exits the cell.

Front

What are aquaporins?

Back

Specialized protein channels in the cell membrane that facilitate the transport of water.

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 does the sodium-potassium pump do?

Back

It actively transports sodium ions out of the cell and potassium ions into the cell, crucial for maintaining cellular function.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is simple diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration without the use of energy.

Front

What role does the endoplasmic reticulum play in the cell?

Back

It is involved in the synthesis of proteins and lipids, and in the transport of materials within the cell.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is the function of the Golgi apparatus?

Back

To modify, sort, and package proteins and lipids for secretion or delivery to other organelles.