Cell Biology Flashcard

Front

What is the function of the cell membrane?

Back

Regulates the movement of materials into and out of the cell.

Front

Which organelle converts chemical energy from food into usable energy?

Back

Mitochondrion.

Front

What happens to a human red blood cell in a hypotonic solution?

Back

It will grow.

Front

What direction does active transport move molecules?

Back

Against the concentration gradient.

Front

What happens to a red onion cell in a hypotonic solution?

Back

It will swell, but not burst.

Front

Define cell membrane.

Back

A biological membrane that separates and protects the interior of all cells from the outside environment.

Front

What is the role of mitochondria in a cell?

Back

To convert chemical energy from food into ATP, the energy currency of the cell.

Front

What is osmosis?

Back

The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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 hypotonic solution?

Back

A solution with a lower concentration of solutes compared to another solution, causing cells to swell.