Cell Membrane and Transport

Front

Passive Transport uses ____ energy

Back

no

Front

In a lipid bilayer, ___________ fatty acid tails face each other within the bilayer and form a region that excludes water.

Back

D. Hydrophobic

Front

What is diffusion?

Back

When molecules move from a high concentration to a low.

Front

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

Back

True

Front

What molecule is pictured?

Back

Phospholipid

Front

What is the primary function of the cell membrane?

Back

To regulate what enters and leaves the cell.

Front

Define osmosis.

Back

The diffusion of water across a selectively permeable membrane.

Front

What does it mean for a solution to be hypotonic?

Back

A solution with a lower concentration of solutes compared to another solution.

Front

What is the role of integral proteins in the cell membrane?

Back

To facilitate the transport of substances across the membrane.

Front

What is a phospholipid composed of?

Back

A hydrophilic head and two hydrophobic fatty acid tails.