Cells and Cell Transport Review

Front

What is the function of mitochondria?

Back

Creates energy (ATP) from food; site of cellular respiration.

Front

Why is passive transport called 'passive'?

Back

Because it occurs WITHOUT energy.

Front

In which direction does oxygen move if there is 25% oxygen inside the cell and 50% outside?

Back

Into the cell.

Front

Where is DNA found in a prokaryotic cell?

Back

Floating around in the cytoplasm.

Front

What is the term for the transport of materials across the cell membrane that requires energy?

Back

Active transport.

Front

What is the primary role of the cell membrane?

Back

To regulate what enters and exits the cell.

Front

Define osmosis.

Back

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

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is the difference between active transport and passive transport?

Back

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

Front

What are ribosomes responsible for?

Back

Protein synthesis.