Lab Module 19

Question 1

This arrow is pointing to what lovely organism?

A) Demodex Folliculorum
B) Demodex Brevis
C) Demodex Demodis
D) Demodex Folicularium

Answer 1

Correct Answer:
A) Demodex Folliculorum

Question 2

What type of scientist studies insects?

A) Urologist
B) Enologist
C) Entomologist
D) Herpetologist

Answer 2

Correct Answer:
C) Entomologist

Question 3

How many legs does this organism possess?

A) 6
B) 10
C) 8
D) 20

Answer 3

Correct Answer:
C) 8

Question 4

Where do these organisms live?

A) Inside hair follicles
B) On top of our skin
C) Only on your lips
D) None of these

Answer 4

Correct Answer:
A) Inside hair follicles

Question 5

What is the yellow material in this image?

A) Red blood cell
B) Eyebrow
C) Hair follicle
D) Sebum

Answer 5

Correct Answer:
D) Sebum

Question 6

What do mites do when they crawl out on your face?

A) Eat
B) Lay eggs
C) Mate
D) Drink water

Answer 6

Correct Answer:
C) Mate

Question 7

Do face mites eliminate their waste?

A) No
B) Yes
C) Only right before they die
D) I’m not sure

Answer 7

Correct Answer:
A) No

Question 8

Which of the following best explains why microbiome modulation is being explored as a therapeutic strategy for dermatologic disorders?

A) Most skin diseases are caused solely by genetic mutations that can be reversed with microbial therapies.
B) The skin microbiome directly regulates epidermal hydration and therefore controls all aspects of skin physiology.
C) Imbalances in the skin microbiome are associated with conditions such as atopic dermatitis, acne, rosacea, and psoriasis.
D) Microbiome-based treatments eliminate the need for traditional dermatological medications.

Answer 8

Correct Answer:
C) Imbalances in the skin microbiome are associated with conditions such as atopic dermatitis, acne, rosacea, and psoriasis.

Question 9

Which therapy described in the passage specifically targets bacterial pathogens using viruses?

A) Probiotics
B) Prebiotics
C) Synbiotics
D) Bacteriophage therapy

Answer 9

Correct Answer:
D) Bacteriophage therapy

Question 10

Which factor most strongly influences the composition of the skin microbiome across different body sites?

A) Local melanin concentration
B) The microenvironment, including moisture, dryness, and sebaceous content
C) The thickness of the stratum corneum
D) The density of hair follicles

Answer 10

Correct Answer:
B) The microenvironment, including moisture, dryness, and sebaceous content

Question 11

Which bacterial phyla make up the majority of the skin microbiome according to the percentages provided?

A) Actinobacteria and bacteroidetes
B) Firmicutes and proteobacteria
C) Actinobacteria and firmicutes
D) Proteobacteria and bacteroidetes

Answer 11

Correct Answer:
C) Actinobacteria and firmicutes

Question 12

Which skin sites demonstrate the least temporal variation in bacterial community structure?

A) Volar forearm, popliteal fossa, and plantar heel
B) External auditory canal, nares, and inguinal crease
C) Interdigital web space, antecubital fossa, and plantar heel
D) Forehead, back, and retro-auricular creases

Answer 12

Correct Answer:
B) External auditory canal, nares, and inguinal crease