Cell Membrane & Transport

Front

What is the hydrophilic portion of the cell membrane?

Back

The hydrophilic portion of the cell membrane refers to the part that is attracted to water, typically the phosphate heads of phospholipids.

Front

What best describes the cell membrane?

Back

The protective outer layer that controls what enters and leaves the cell.

Front

Which molecule in the cell membrane is useful for cell identification?

Back

Carbohydrates are useful for cell identification.

Front

Diffusion is a form of __________ transport.

Back

Passive transport.

Front

What organelle helps maintain homeostasis by controlling what substances may enter or leave cells?

Back

Cell membrane.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate the movement of substances in and out.

Front

What are phospholipids?

Back

Phospholipids are molecules that make up the cell membrane, consisting of a hydrophilic head and two hydrophobic tails.

Front

What role do proteins play in the cell membrane?

Back

Proteins assist in transport, act as receptors, and provide structural support.

Front

What is the difference between passive and active transport?

Back

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

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.