Unit 2: Cell Transport and Cell Division Review

Front

What is active transport?

Back

Active transport is the process of moving substances against their concentration gradient (from low to high concentration) using energy, typically in the form of ATP.

Front

What is osmosis?

Back

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

Front

What happens to a freshwater paramecium placed in salt water?

Back

The paramecium will shrivel as water moves out of the cell due to the higher concentration of salt outside.

Front

What is cellular homeostasis?

Back

Cellular homeostasis is the process by which cells maintain a stable internal environment despite changes in external conditions.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required to move substances against their concentration gradient during active transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their gradient.

Front

What is turgor pressure?

Back

Turgor pressure is the pressure of the cell contents against the cell wall in plant cells, which helps maintain their structure.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, bringing them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles, releasing them outside the cell.