Bio 299 Microbiology test 3 Latest Version Questions and Accurate Answers -What toxin blocks the relaxation pathway of muscles, causing spastic paralysis and muscle spasms? - Correct Answer-Tetanus toxin
A fully assembled viral particle is called? - Correct Answer-Virion. Encompasses genetic material, capsid, an envelope if there is one, etc. The actual virus part is the genetic material.
An enzyme that is found in tears and saliva that destroys the peptidoglycan cell walls of Gram (+) bacteria? - Correct AnswerLysozyme
Chicken pox, syphilis, and AIDS are all examples of what type of infection? (HINT: transferred from one host to another) - Correct AnswerCommunicable
Consists of 20 enzymes found in blood and body fluids that activate one another to destroy invading microorganisms? - Correct Answer-Complement system (acts like dominos)
Describe the components of the A-B Exotoxins? - Correct Answer-The "A" part is the toxic part. The "B" part attaches to the specific cell receptors and lets the toxin into the cell
Microorganisms that establish permanent residence (colonize), but do not produce disease under normal conditions are called what? - Correct Answer-norma flora or microbiota
Name on type of nucleic acids that viruses can be comprised of? - Correct Answer-ds DNA, ss RNA- most common or ss DNA, ds RNA- less common
Name one factor that contributes to nosocomial infections? (there are 3) - Correct Answer-compromised host, more pathogenics in general, chain of transmission in hospital.
Name one way that microorganisms gain access to the gastrointestinal tract? (3 options) - Correct Answer-food, contaminated fingers, water
Name parts of the body where mucous membranes are found? - Correct Answer-GI tract, respiratory tract, GU tract, conjunctiva. Purpose is to "trap"
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