Question

staphylococcus aureus, including mrsa strains, may commonly be carried as a normal member of the normal microbiota in some people.
true
false
question 71 (1 point)
typhoid mary is an example of an asymptomatic carrier.
true
false
question 72 (1 point)
beta - lactam antibiotics target ribosomes.
true
false

Explanation:

• Question 71: Typhoid Mary (Mary Mallon) was a healthy carrier of typhoid bacteria. She showed no symptoms of typhoid fever but could transmit the bacteria to others. So, she is an example of an asymptomatic carrier.
• Question 72: Beta - lactam antibiotics (such as penicillins and cephalosporins) target the synthesis of bacterial cell walls. They inhibit the enzyme transpeptidase which is involved in cross - linking of peptidoglycan chains in the cell wall. Ribosomes are targeted by antibiotics like macrolides (e.g., erythromycin).

Answer:

• Question 71: True
• Question 72: False