Plasma Membrane and Cellular Transport

Front

What are the three substances that move among phospholipids in the plasma membrane?

Back

Cholesterol, proteins, carbohydrates.

Front

What is the process called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?

Back

Passive Transport.

Front

What does it mean that the cell membrane is selectively permeable?

Back

Certain things can enter while others cannot.

Front

What term describes the movement of water from high concentration to low concentration?

Back

Osmosis.

Front

What is required to pump a solute across a membrane against its gradient?

Back

Active transport requires energy.

Front

What is the primary function of the plasma membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define diffusion in the context of cellular transport.

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What role do proteins play in the plasma 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 specifically related to?

Back

Osmosis is specifically related to the movement of water.