Role of microorganisms and nitrogen cycle

Plants and animals cannot use nitrogen directly from the air.

• True

• False

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition

• nitrogen fixation

• ammonia

• denitrification

Nitrogen fixing bacteria, lives in nodules on the root of a plant called ______

• Broccoli

• Legumes

• Beats

• Soybeans

What is the role of denitrifying bacteria?

• change nitrate back into nitrogen gas

• change nitrogen gas into nitrate

• absorb carbon dioxide in the soil

• release oxygen gas into the atmosphere

True of False: All microorganisms are harmful

• True

• False

Harmful or Helpful: Bacteria used to make yogurt

• Harmful

• Helpful

Carrier of parasite that cause malaria is_________

• Female Anopheles mosquito

• Cockroach

• Housefly

• Butterfly

Cholera is caused by ________

• Bacteria

• Virus

• Protozoa

• Fungi

Female Aedes mosquito is the carrier of __________

• Corona virus

• Common cold virus

• Dengue virus

• Measles virus