Microbiology Quiz

Which type of haemolysis shows a complete clear circular zone around the bacterial colonies?

• δ-haemolysis

• γ-haemolysis

• β-haemolysis

• α-haemolysis

What color does Staphylococcus aureus turn when it ferments mannitol?

• Red

• White

• Green

• Yellow

Which type of pigment remains bound to the body of the microorganism?

• Exopigment

• Overpigment

• Hypopigment

• Endopigment

How is motility of bacteria detected?

• Hanging drop technique

• Shaking the culture tube

• Pouring liquid medium

• Streaking on a plate

What does the catalase production test detect in bacteria?

• Production of water

• Production of carbon dioxide

• Production of hydrogen

• Production of oxygen

Which bacteria produce coagulase enzyme?

• Streptococcus

• Salmonella

• Staphylococcus aureus

• Pseudomonas

Which test is used to detect the production of cytochrome oxidase?

• Catalase test

• Oxidase test

• Coagulase test

• Urease test

What is the purpose of Triple Sugar Iron (TSI) and Kligler's Iron Agar (KIA) media?

• To detect sugar fermentation

• To detect urease production

• To detect pigment production

• To detect gas production

What does the urease test detect in bacteria?

• Production of water

• Production of oxygen

• Production of ammonia

• Production of carbon dioxide

Which test is used to determine the ability of bacteria to consume citrate as a sole source of carbon?

• Voges-Proskauer test

• Methyl red test

• Citrate utilization test

• Indole production test