How Much Do You Know About Microbiology? Take the Test

Oct 25, 2023 Rajni Pandey

What is the primary function of a bacterial capsule?

(A) Energy production (B) Protection from the host's immune system (C) DNA replication (D) Nutrient absorption​ Image Source: Canva

Right Answer: B. Protection from the host's immune system

Explanation: The primary function of a bacterial capsule is to protect the bacterium from the host's immune system. It acts as a physical barrier that hinders immune cell recognition and engulfment. Image Source: Canva

Which microbiological technique is used to separate and identify bacterial species?

(A) Polymerase Chain Reaction (PCR) (B) Gram staining (C) Bacterial culture and biochemical testing (D) Electron microscopy Image Source: Canva

Right Answer: C. Bacterial culture and biochemical testing

Explanation: Bacterial culture and biochemical testing involves growing bacteria in specific media and then conducting biochemical tests to identify them based on their metabolic characteristics. Image Source: Canva

What is the primary mode of action of antibiotics that target bacterial cell walls?

(A) Inhibition of protein synthesis (B) Inhibition of DNA replication (C) Inhibition of peptidoglycan synthesis (D) Inhibition of RNA transcription Image Source: Canva

Right answer: C. Inhibition of peptidoglycan synthesis

Explanation: Antibiotics that target bacterial cell walls primarily inhibit the synthesis of peptidoglycan, a key component of the bacterial cell wall. Image Source: Canva

Which microorganism is responsible for the fermentation of milk into yogurt?

(A) Yeast (B) E. coli (C) Lactic acid bacteria (D) Fungi Image Source: Canva

Right answer: C. Lactic acid bacteria

Explanation: Lactic acid bacteria are responsible for fermenting milk into yogurt by converting lactose into lactic acid through fermentation. Image Source: Canva

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