Question 1

Which of the following characteristics of the skin most directly limits microbial growth on its surface?

Accepted Answer

Salty, dry environment with low pH

Question 2

Lysozyme is an important enzyme found in human secretions. What is its primary function regarding bacteria?

Accepted Answer

It hydrolyzes the peptidoglycan in bacterial cell walls

Question 3

A patient presents with a red rash on the skin that is accompanied by a rash on the mucous membranes. Which terms best describe these symptoms?

Accepted Answer

Exanthem and enanthem

Question 4

Which of the following is the correct definition of a carbuncle?

Accepted Answer

A cluster of connected furuncles

Question 5

MRSA is a significant concern in healthcare. What does MRSA stand for?

Accepted Answer

Methicillin-Resistant Staphylococcus aureus

Question 6

Which of the following best describes the difference between HA-MRSA and CA-MRSA?

Accepted Answer

HA-MRSA is hospital-acquired, while CA-MRSA is community-acquired

Question 7

GAS is an abbreviation commonly used in microbiology. What does GAS stand for?

Accepted Answer

Group A Streptococcus

Question 8

Necrotizing fasciitis is a rapidly progressing infection. Which organism is most commonly associated with this disease?

Accepted Answer

Group A Streptococcus

Question 9

Acne is a common skin condition. Which genus of bacteria is primarily responsible for causing acne?

Accepted Answer

Propionibacterium

Question 10

Sebum plays a role in the development of acne. What is sebum?

Accepted Answer

An oily substance secreted by sebaceous glands

Question 11

Which of the following is NOT a treatment discussed in lecture for acne?

Accepted Answer

Antifungal creams

Question 12

Warts are caused by which type of microorganism?

Accepted Answer

Virus

Question 13

Smallpox was a devastating disease in human history. What was the most common route of transmission for smallpox?

Accepted Answer

Respiratory droplets

Question 14

How was smallpox nearly eliminated from the human population?

Accepted Answer

Global vaccination campaigns

Question 15

Shingles is a painful skin condition. Where does the latent virus responsible for shingles 'hide' in the human body?

Accepted Answer

Dorsal root ganglia

Question 16

The MMR vaccine protects against which of the following diseases?

Accepted Answer

Measles, mumps, and rubella

Question 17

Ringworm and athlete's foot are both caused by which type of microorganism?

Accepted Answer

Fungus

Question 18

Thrush is a common infection in infants and immunocompromised patients. What genus causes thrush, and to which kingdom does it belong?

Accepted Answer

Candida; Fungi

Question 19

Pediculosis is an infestation of which type of organism, and to which kingdom does it belong?

Accepted Answer

Lice; Animalia

Question 20

Why are newborn babies given eye drops containing silver nitrate or antibiotics shortly after birth?

Accepted Answer

To prevent transmission of Neisseria gonorrhoeae from mother to child

Microbiology Exam 5 Study Guide – Step-by-Step Guidance

Study Guide - Practice Questions