MCQs on Microorganisms

What are microorganisms?

• Large animals

• Tiny living organisms visible to the eye

• Tiny living organisms not visible to the naked eye

• Non-living particles

Which of the following is NOT a type of microorganism?

• Bacteria

• Algae

• Fungi

• Insects

Which microorganism is used to make curd?

• Yeast

• Lactobacillus

• Penicillin

• Amoeba

What is the name of the process in which yeast converts sugar into alcohol?

• Pasteurization

• Nitrogen fixation

• Fermentation

• Decomposition

Which gas is released during bread-making by yeast?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which of the following is caused by a virus?

• Tuberculosis

• Malaria

• Flu

• Amoebiasis

Which microorganism causes malaria?

• Bacteria

• Virus

• Protozoa

• Algae

Can viruses reproduce outside a living cell?

• Yes

• No

• Sometimes

• Only in water

Which of the following microorganisms help in nitrogen fixation in soil?

• Yeast

• Amoeba

• Certain bacteria

• Viruses

Which microorganism is used in alcohol and wine production?

• Fungi

• Algae

• Yeast

• Bacteria