T7D5 Cell Membrane

Front

What is the primary macromolecule that makes up the cell membrane?

Back

Lipids

Front

What type of molecules require assistance to cross the cell membrane due to their size or charge?

Back

Large or charged (polar) molecules.

Front

What is the structure that consists of a phosphate group, glycerol, and two fatty acid tails?

Back

Phospholipid.

Front

What role do proteins play in the cell membrane?

Back

They form channels and pumps in the phospholipid bilayer.

Front

What is the term for the double-layered structure of the cell membrane?

Back

Phospholipid bilayer.

Front

What property of the cell membrane allows it to be selectively permeable?

Back

The arrangement of phospholipids and proteins.

Front

What is the function of cholesterol in the cell membrane?

Back

To maintain membrane fluidity and stability.

Front

What is the difference between integral and peripheral proteins in the cell membrane?

Back

Integral proteins span the membrane, while peripheral proteins are attached to the surface.

Front

How do transport proteins facilitate the movement of substances across the cell membrane?

Back

By providing a pathway for specific molecules to pass through.

Front

What is the process called when molecules move from an area of higher concentration to an area of lower concentration across the membrane?

Back

Diffusion.