Bacteria MCQs with Answers

A type of bacteria stained purple with gram stain?

• A.Cyanobacteria
• B.Gram negative
• C.Acid-fast
• D.Gram positive

Which of the following organelle is not present in viruses?

• A.Ribosomes
• B.Genetic material (DNA or RNA)
• C.Protein coat (Capsid)
• D.Envelope (in some viruses)

Flagellum of bacteria arises from _?

• A.Basal body
• B.Cell wall
• C.Cytoplasm
• D.Plasma membrane

Past Paper MCQ

Which of the following is known for its ability to replicate itself?

• A.Virus
• B.Fungus
• C.Bacteria
• D.Algae

Which of the following is NOT true about viruses?

• A.They are obligate intracellular parasites
• B.They can replicate on their own
• C.They contain either DNA or RNA as genetic material
• D.They lack cellular machinery like ribosomes

A Russian scientist discovered that certain diseases could be transmitted by an agent that could pass through a very fine filter. This agent is called ?

• A.Bacteria
• B.Protozoa
• C.Fungi
• D.Viruses

Which is/are the organisms that break down or decompose dead plants and animals?

• A.Bacteria
• B.Fungi
• C.Both A and B
• D.Viruses

Which is used in genetic engineering because of its ability to multiply in the shortest span of time?

• A.Fungi
• B.Viruses
• C.Bacteria
• D.Protozoa

E.coli is an example of?

• A.Virus
• B.Fungus
• C.Bacteria
• D.Protozoa

The pathway to the breakdown of glucose, carried out by micro-organisms, is called:

• A.Photosynthesis
• B.Glycolysis
• C.Krebs cycle
• D.Alcoholic fermentation