BIOD 101 Module 6 Exam
What do some viruses do to avoid recognition? Why?
- Correct Answer – Mutate rapidly so memory cells don’t exist and
the immune system can’t generate a large response to remove it
What is an example of a virus that mutates rapidly to avoid
detection - Correct Answer – HIV
Some viruses develop _ to escape detection - Correct Answer – Capsules
Capsules make pathogens difficult to recognize but also - Correct Answer – Provide protection from degradation
When treating patients, _ and _ techniques must be used
simultaneously to diagnose, treat, and prevent reinfection/further
spread. - Correct Answer – Microbiological, immunological
What 5 things must healthcare providers consider?
- Correct Answer – Exposure to microorganisms, microorganism
evasion, incubation period/symptom onset, appropriate treatment,
future prevention
What is the causation pathogen of strep throat? - Correct Answer – Streptococcus pyogenes group A (GAS)
Group A is a _ on the surface of a cell - Correct Answer – Carb
What group is effected most by strep? - Correct Answer – Children
Strep can cause _ and _ infections - Correct Answer – Superficial, invasive
Which type of infection of strep is common and easily treatable? - Correct Answer – Superficial
In countries with poor access to antibiotics, strep infection can
lead to complications like – Correct Answer – Rheumatic heart
disease
Where does S. pyogenes commonly colonize?
- Correct Answer – Mouth, nose, open skin lesions, tissue of
rectum and vagina
How does exposure to strep occur? - Correct Answer – Saliva or nasal secretions, respiratory
droplets, contaminated surfaces
What is a virulence factor? - Correct Answer – Agents used by a pathogen to establish
successful host colonization
What are the two virulence factors used by GAS? - Correct Answer – M protein and capsule
What is used to attach directly to a cell surface and once
attached, cells reproduce asexually while bacterial toxins on cell
surface damage and kill host cells? - Correct Answer – M protein
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