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Microbiology and Pathogenic Microorganisms Quiz

#1

Which of the following is a Gram-negative bacterium?

Escherichia coli
Explanation

Escherichia coli is a Gram-negative bacterium known for its presence in the intestines.

#2

Which microorganism causes tuberculosis?

Mycobacterium tuberculosis
Explanation

Mycobacterium tuberculosis is the bacterium responsible for causing tuberculosis.

#3

Which of the following is a viral disease?

Influenza
Explanation

Influenza is a viral disease commonly known as the flu.

#4

What is the main mode of transmission for the Zika virus?

Mosquito bites
Explanation

Zika virus is primarily transmitted through mosquito bites.

#5

Which of the following is NOT a characteristic of fungi?

Photosynthetic
Explanation

Fungi are heterotrophic organisms and do not perform photosynthesis.

#6

What is the name of the proteinaceous infectious agent that causes abnormal folding of proteins in the brain, leading to neurodegenerative diseases?

Prion
Explanation

Prion is a proteinaceous infectious agent known for causing abnormal protein folding leading to diseases like Creutzfeldt-Jakob disease.

#7

Which of the following is NOT a fungal infection?

Malaria
Explanation

Malaria is a disease caused by Plasmodium parasites and is not a fungal infection.

#8

Which of the following microorganisms is responsible for causing dental cavities?

Streptococcus mutans
Explanation

Streptococcus mutans is a bacterium responsible for dental cavities.

#9

What is the primary characteristic of a bacteriophage?

It infects bacteria.
Explanation

Bacteriophages are viruses that infect bacteria.

#10

Which of the following is a bacterial sexually transmitted infection (STI)?

Gonorrhea
Explanation

Gonorrhea is a sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae.

#11

Which of the following statements about viruses is true?

Viruses lack cellular structure and can't reproduce on their own.
Explanation

Viruses lack cellular structure and depend on host cells for replication.

#12

Which of the following is NOT a method for controlling microbial growth?

Fermentation
Explanation

Fermentation is a metabolic process used by microbes, not a method for controlling their growth.

#13

Which of the following is a characteristic of a prion?

It lacks nucleic acid.
Explanation

Prions lack nucleic acid and are solely composed of misfolded proteins.

#14

Which of the following statements about bacteria is true?

Bacteria can have different shapes such as rods, spheres, or spirals.
Explanation

Bacteria exhibit various shapes including rods, spheres, and spirals.

#15

Which of the following is NOT a characteristic of viruses?

They can replicate independently.
Explanation

Viruses cannot replicate independently and require host cells for replication.

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