#1
Which of the following is a Gram-negative bacterium?
Escherichia coli
ExplanationEscherichia coli is a Gram-negative bacterium known for its presence in the intestines.
#2
Which microorganism causes tuberculosis?
Mycobacterium tuberculosis
ExplanationMycobacterium tuberculosis is the bacterium responsible for causing tuberculosis.
#3
Which of the following is a viral disease?
Influenza
ExplanationInfluenza is a viral disease commonly known as the flu.
#4
What is the main mode of transmission for the Zika virus?
Mosquito bites
ExplanationZika virus is primarily transmitted through mosquito bites.
#5
Which of the following is NOT a characteristic of fungi?
Photosynthetic
ExplanationFungi 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
ExplanationPrion 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
ExplanationMalaria 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
ExplanationStreptococcus mutans is a bacterium responsible for dental cavities.
#9
What is the primary characteristic of a bacteriophage?
It infects bacteria.
ExplanationBacteriophages are viruses that infect bacteria.
#10
Which of the following is a bacterial sexually transmitted infection (STI)?
Gonorrhea
ExplanationGonorrhea 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.
ExplanationViruses lack cellular structure and depend on host cells for replication.
#12
Which of the following is NOT a method for controlling microbial growth?
Fermentation
ExplanationFermentation 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.
ExplanationPrions 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.
ExplanationBacteria exhibit various shapes including rods, spheres, and spirals.
#15
Which of the following is NOT a characteristic of viruses?
They can replicate independently.
ExplanationViruses cannot replicate independently and require host cells for replication.