Cell Membrane and Transport Review

Front

What happens to your cells when you drink salt water?

Back

Drinking salt water is bad because it is hypertonic to your cells, causing them to shrivel and die.

Front

What is the process called when water moves across a selectively permeable membrane without energy?

Back

Osmosis.

Front

What term describes the diffusion of water across a membrane?

Back

Osmosis.

Front

What type of transport does the sodium-potassium pump represent?

Back

Active transport.

Front

What role does cholesterol play in the cell membrane?

Back

Cholesterol helps to stabilize the cell membrane.

Front

Define hypertonic solution in relation to cells.

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, leading to water moving out of the cell.

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 a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others.

Front

What is the function of the cell membrane?

Back

The cell membrane protects the cell, provides structure, and regulates the movement of substances in and out of the cell.

Front

What is osmosis and why is it important for cells?

Back

Osmosis is the movement of water across a membrane, crucial for maintaining cell turgor and overall homeostasis.