BIOS 242 Fundamentals Of Microbiology
With Lab lOMoAR cPSD| 18211884
BIO 242 FINAL EXAM 3 REVIEW 2023-24 SPRING- SUMMER
SESSION VERIFIED EXAM WITH ANSWERS
Fundamentals Of Microbiology With Lab (Chamberlain University)
, lOMoAR cPSD| 18211884
BIOS 242 Fundamentals Of Microbiology
With Lab
CH. 14 Terms and concepts in this chapter should be familiar to you through the news, health
care visits, public health campaigns. Use this personal background to help you learn the
material for this chapter. They are used to describe diseases in Ch. 21-26.
1. How does the normal microbiota benefit the host (revisited in immunology,
diseases)?
Normal microbiota protect the host against potential colonization by pathogens
Mutualism: both organism benefit
➢ E. coli produce vitamin K, B
➢ Host give E. coli a place to stay (intestine)
2. Recurring topic. What are opportunistic pathogens?
Under certain condition, normal microbiota change their relationship with the host
EX: E. coli goes anywhere other than intestine cause infections
3. Briefly note the exceptions to each of Koch’s Postulates (the four postulates were
first introduced in Ch. 1 – review the Exam 1 RQs)?
a. Some microbes have never been cultured
b. Some infectious diseases have poorly defined etiologies
c. Some pathogen can cause several disease conditions
i. Mycobacterium tuberculosis affects lungs, skin, bones, and internal organs
d. Some pathogen cause disease only in humans
i. HIV
4. How are diseases classified according to occurrence?
a. Sporadic – Occurs only occasionally
i. Typhoid fever
b. Endemic – Constant present in population
i. Common cold
c. Epidemic – Acquired by many people in given area in short time
i. Influenza
d. Pandemic – Worldwide epidemic
i. Influenza, AIDS
5. How are diseases classified according to degree of transmission?
a. Communicable – Disease that is spread from one host to another
b. Contagious – Disease that is easily and rapidly spread form on host to another
c. Noncommunicable – Disease not spread from one host to another
6. How are diseases classified according to severity or duration?
, lOMoAR cPSD| 18211884
BIOS 242 Fundamentals Of Microbiology
With Lab
a. Acute – Symptoms develop rapid, but disease lasts only short time
i. Influenza
b. Chronic – Symptoms develop slowly
i. Tuberculosis, infectious mononuclesis, Hep B