Biology 1st Semester Homeostasis

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is dynamic equilibrium in cells?

Back

Dynamic equilibrium is a state where materials pass into and out of a cell at equal rates, resulting in no net change in concentration inside and outside the cell.

Front

Define passive transport.

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is active transport?

Back

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

Front

What are the two main types of cell transport?

Back

The two main types of cell transport are passive transport and active transport.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances that are too large to enter through the cell membrane.

Front

What is phagocytosis?

Back

Phagocytosis is a type of endocytosis where cells engulf large particles or other cells.

Front

What is pinocytosis?

Back

Pinocytosis is a type of endocytosis where cells take in small amounts of liquid and dissolved substances.