Flashcard: Cell Membrane & Cell Transport

Front

What happens to an animal cell placed in pure water?

Back

Cytolysis occurs, where the cell swells and may burst due to excess water intake.

Front

What happens to a freshwater plant cell placed in saltwater?

Back

Plasmolysis occurs, causing the cell to shrink as water leaves the cell.

Front

What is the smallest unit of a cell membrane that forms a bi-layer?

Back

Phospholipids are the smallest unit that forms the lipid bilayer of the cell membrane.

Front

What condition occurs if too much water leaves a cell?

Back

Plasmolysis occurs, leading to cell collapse.

Front

Which mode of cellular transport does NOT require energy?

Back

Facilitated Diffusion does not require energy to move substances across the cell membrane.

Front

Define osmosis.

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of transporting molecules across a cell membrane via protein channels without energy.

Front

What is the role of phospholipids in the cell membrane?

Back

Phospholipids form the basic structure of the cell membrane, creating a barrier that separates the inside of the cell from the outside.

Front

What is cytolysis?

Back

Cytolysis is the process where a cell bursts due to excessive intake of water.

Front

What is plasmolysis?

Back

Plasmolysis is the process where a cell shrinks due to loss of water, often occurring in hypertonic solutions.