BIOS241 Week 8 Exam 3 (Oct 2026)

BIOS241 Week 8: Exam 3 [Chamberlain]

Question

A child presents with nighttime anal itching and visible worms near the anus. What is the most likely diagnosis?

1. Giardiasis
2. Norovirus
3. Salmonellosis
4. Enterobiasis ✅

Question

What practices help reduce the spread of antimicrobial resistance in healthcare settings? Select all that apply.

1. Isolating patients with resistant infections ✅
2. Ensuring proper hand hygiene among staff ✅
3. Implementing strict infection control protocols ✅
4. Prescribing antibiotics for all fevers

Question

Which of the following factors influences the effectiveness of an antimicrobial agent? Select all that apply.

1. Time of day
2. Presence of organic matter ✅
3. Temperature ✅
4. pH ✅
5. Color of the surface

Question

What is the role of microbial antagonism in the gut?

1. It allows viruses to colonize the intestinal tract
2. It increases the growth of harmful bacteria
3. It eliminates all microbes from the digestive system
4. It allows beneficial microbes to outcompete harmful ones ✅

Question

A nurse uses an alcohol pad to clean a patient’s skin before an injection. This is an example of:

1. Degermation ✅
2. Sanitization
3. Disinfection
4. Sterilization

Prion diseases like variant Creutzfeldt-Jakob Disease (vCJD) and protozoan infections like toxoplasmosis differ in their causative agents. Prions are ① misfolded ✅ proteins that lack nucleic acids, while protozoa are ② unicellular ✅ eukaryotic organisms. vCJD is transmitted through consumption of contaminated ③ beef ✅, whereas toxoplasmosis is often acquired through exposure to ④ cat feces ✅ or undercooked meat. Neurological symptoms are common in both, but prion diseases are always ⑤ fatal ✅, while toxoplasmosis may be asymptomatic in healthy individuals.

Answers 1–5

1. misfolded ✅
2. unicellular ✅
3. beef ✅
4. cat feces ✅
5. fatal ✅……………………………………..purchase this entire exam at $50 only