Cell Membrane and Transport Review

Front

A cell will __________________ in a hypotonic solution.

Back

swell and perhaps burst (lyse)

Front

What is another term for "selectively permeable"?

Back

semipermeable

Front

What three substances make up the cell membrane?

Back

lipids, proteins, carbohydrates

Front

Solutes move against the concentration gradient, therefore energy is needed. What type of transport is this?

Back

Active Transport

Front

True or false: Regulating what enters and leaves the cell helps the cell maintain homeostasis.

Back

True

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define diffusion.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What does it mean for a membrane to be selectively permeable?

Back

It allows certain substances to pass while blocking others.

Front

What is the role of proteins in the cell membrane?

Back

They assist in transport and communication across the membrane.