7th Test 2

Front

What is the function of chloroplasts in plant cells?

Back

Chloroplasts capture energy from sunlight and convert it into a usable form for the cell to make food.

Front

What is osmosis?

Back

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

Front

What is known as the powerhouse of the cell?

Back

The mitochondria are known as the powerhouse of the cell because they produce energy.

Front

What is the role of the cell membrane?

Back

The cell membrane is a thin, flexible barrier that surrounds a cell and controls which substances pass in and out.

Front

What is an autotrophic organism?

Back

An autotrophic organism is one that can capture energy from sunlight or chemicals to produce its own food.

Front

What is the difference between autotrophic and heterotrophic organisms?

Back

Autotrophic organisms produce their own food, while heterotrophic organisms obtain food by consuming other organisms.

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 active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is the nucleus?

Back

The nucleus is the organelle that contains the cell's genetic material and controls its activities.

Front

What is the cytoplasm?

Back

The cytoplasm is the jelly-like substance within a cell that contains organelles and is the site of many metabolic processes.