Cell Transport and Membranes

Front

What is the function of the cell membrane?

Back

The cell membrane controls what substances may enter or leave the cell, helping to maintain homeostasis.

Front

What are the two parts of a phospholipid?

Back

Hydrophilic Head and Hydrophobic Tail.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

What does 'hydrophobic' mean?

Back

Hydrophobic refers to substances that repel water or do not mix with water.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the role of proteins in the cell membrane?

Back

Proteins in the cell membrane help with transport, act as receptors, and provide structural support.

Front

What is the difference between hydrophilic and hydrophobic substances?

Back

Hydrophilic substances are attracted to water, while hydrophobic substances repel water.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass while blocking others.