Homeostasis and Transport Practice

Front

What type of transport does not require energy and moves substances from high to low concentration?

Back

Passive transport

Front

What is the process called when water moves across a semipermeable membrane?

Back

Osmosis

Front

What is the term for the movement of molecules from an area of higher concentration to an area of lower concentration?

Back

Diffusion

Front

What type of transport requires energy to move substances against their concentration gradient?

Back

Active transport

Front

What is the role of protein channels in facilitated diffusion?

Back

They help transport molecules across the cell membrane without using energy.

Front

What is homeostasis in the context of cells?

Back

The maintenance of a stable internal environment within a cell.

Front

What is the difference between diffusion and facilitated diffusion?

Back

Diffusion occurs directly through the membrane, while facilitated diffusion uses protein channels.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What is the primary energy source for active transport?

Back

ATP (Adenosine Triphosphate)

Front

What happens to a cell in a hypertonic solution?

Back

It loses water and may shrivel.