Cell Membrane and Cell Transport

Front

What is EXOCYTOSIS and what type of transport does it represent?

Back

Exocytosis is an example of active transport where molecules move from low concentration to high concentration.

Front

What part of the phospholipid is hydrophobic and repels water?

Back

The fatty acid tails of the phospholipid are hydrophobic.

Front

What type of cell transport is characterized by the movement of molecules against their concentration gradient?

Back

Active transport.

Front

Describe the overall structure of the cell membrane.

Back

The cell membrane is a phospholipid bilayer with embedded proteins.

Front

What process allows glucose to enter a cell through a carrier protein?

Back

Facilitated diffusion.

Front

What is the primary function of the cell membrane?

Back

The primary function of the cell membrane is to protect the cell and regulate what enters and exits.

Front

Define passive transport and give an example.

Back

Passive transport is the movement of molecules across the cell membrane without the use of energy, such as diffusion.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move molecules against their concentration gradient, while passive transport does not.

Front

What role do proteins play in the cell membrane?

Back

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

Front

What is osmosis?

Back

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