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NEET MDS Quiz - Practice Test
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Practice Test

General Microbiology - 3 Questions

1
General Microbiology

What type of genome do Hepatitis B viruses have?

1) ssRNA

2) dsDNA

3) ssDNA

4) dsRNA

📝 Explanation:

Hepatitis B viruses possess a double-stranded DNA (dsDNA) genome, which is unique among the hepatitis viruses. This dsDNA is partially double-stranded and circular, playing a crucial role in the virus life cycle and replication.

2
General Microbiology

What is the typical color of Salmonella colonies on MacConkey agar, except for Sh. Sonnei?

1) Colorless

2) Pink

3) Red

4) Yellow

📝 Explanation:

Salmonella species, excluding Shigella sonnei, which is lactose non-fermenting, will ferment lactose in MacConkey agar, turning the colonies pink due to the formation of acidic end-products

3
General Microbiology

Which of the following statements about the fermentation of sugars by Anthracoid bacilli is true?
1) Anthracoid bacilli ferment glucose, maltose, lactose, and sucrose, producing acid and gas.
2) Anthracoid bacilli do not ferment glucose but ferment maltose, lactose, and sucrose.
3) Anthracoid bacilli only ferment glucose.
4) Anthracoid bacilli ferment glucose, maltose, and lactose, but not sucrose.

📝 Explanation:

Anthracoid bacilli ferment glucose, maltose, lactose, and sucrose, producing acid and gas.

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