Microorganisms Quiz

What are microorganisms?

• Very small living things

• Only bacteria

• Very large living things

• Non-living things

Which of the following is NOT a type of microorganism?

• Algae

• Bacteria

• Mammals

• Fungi

What do fungi reproduce by?

• Eggs

• Cells

• Spores

• Seeds

Which microorganism is known to cause food poisoning?

• Amoeba

• Penicillium

• Chlorella

• Escherichia coli

What is the main characteristic of viruses?

• They can live on their own

• They can reproduce outside a host

• They can only reproduce inside other living things

• They are the largest microorganisms

Which of the following factors does NOT affect the growth of microorganisms?

• Color of the environment

• Presence of air

• Presence of water

• Temperature

What is the process called when microorganisms break down organic matter?

• Respiration

• Decomposition

• Fermentation

• Photosynthesis

Which microorganism is used to make bread?

• Algae

• Yeast

• Bacteria

• Protozoa

What is the role of bacteria in sewage treatment?

• To produce food

• To decompose organic waste

• To cause diseases

• To create energy

Which of the following is a harmful effect of microorganisms?

• Decomposition of waste

• Production of yogurt

• Food spoilage

• Production of antibiotics