Ch. 19 Cycles of Matter

How do most animals get the carbon they need?

• through photosynthesis

• through respiration

• by eating plants

Why do organisms need nitrogen?

• to transport nutrients

• to build protein and DNA

• to transport wastes

Tags

NGSS.MS-LS2-3

Most animals get Nitrogen from

• the atmosphere

• performing nitrogen fixation

• eating other organisms

Which of the following can cause nitrogen fixation?

• Lightning

• Forest Fires

• Combustion

Tags

NGSS.MS-LS2-3

Why is the carbon cycle important to living things?

• It transports the materials cells use for energy

• It converts nitrogen into a usable form

• It converts carbon from a liquid to a gas

Tags

NGSS.MS-LS2-3

What important function do bacteria in the soil have?

• respiration

• nitrogen fixation

• photosynthesis

Which process does NOT release carbon dioxide into the environment?

• combustion

• photosynthesis

• respiration

Tags

NGSS.MS-LS1-6

During photosynthesis what gas do plants release?

• oxygen

• carbon dioxide

• nitrogen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During cellular respiration, what do plant cells use to produce energy from food?

• sunlight

• water

• oxygen

Tags

NGSS.HS-LS1-7

Photosynthesis is important because

• it makes plants green

• without it, Earth would all be desert

• photosynthetic organisms form the base of the food chain

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3