Microbiology Quiz on Bacteria and Viruses

Microbiology Questions and Answers

• Question 11: The bacterium most associated with community pneumonia is Streptococcus pneumoniae.

• Question 12: Varicella Zoster virus (chickenpox) is a common cause of skin rashes in children.

• Question 13: The lipopolysaccharide (LPS) is a component of Gram-negative bacterial cell walls that can be toxic to humans.

• Question 14: Naked viruses lack an envelope made of lipids, unlike enveloped viruses. They are generally more resistant to detergents and disinfectants and have an icosahedral shape. Some can tolerate stomach acid and pass through to the intestine.

• Question 15: Poliomyelitis is a viral disease that may cause paralysis and can be fatal by blocking breathing function.

• Question 16: Bacterial capsules are composed of sugars, block phagocytosis, and enhance bacterial adhesion to tissues and surfaces, making them a virulence factor.

• Question 17: Diphtheria toxin inhibits neurotransmission.

• Question 18: Streptococcus pneumoniae is the most common cause of community-acquired pneumonia.

• Question 19: Measles virus is among the listed microorganisms that lack available vaccines.

• Question 20: The cell wall of Gram-positive bacteria contains peptidoglycan, teichoic and lipoteichoic acids, and proteins.

Test your knowledge with this quiz focused on microbiology, covering important pathogens, their effects on humans, and their structural characteristics. Topics include Streptococcus pneumoniae, viral diseases like poliomyelitis, and the role of bacterial cell components in virulence. Enhance your understanding of the microbial world and its impact on health.