The Cell System

Front

What is 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 passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, often through processes like diffusion and osmosis.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy, often against a concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in materials by engulfing them in a membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials by vesicles fusing with the cell membrane.

Front

What is a plant cell?

Back

A plant cell is a type of cell that has a cell wall, chloroplasts for photosynthesis, and a large central vacuole.

Front

What is an animal cell?

Back

An animal cell is a type of cell that only has a cell membrane and lacks a cell wall.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which autotrophs, like plants, convert light energy into chemical energy in the form of glucose.

Front

What is an autotroph?

Back

An autotroph is an organism that can produce its own food using light or chemical energy, such as plants.

Front

What is a heterotroph?

Back

A heterotroph is an organism that cannot produce its own food and must consume other organisms for energy.