MB C14 Self Quiz

tokia's version from 2016-04-29 04:09


Self quiz chapter 14


Question Answer
1. ParasitismOnly one organism benefits from the relationship
PathogenA parasite capable of causing disease in a host
SymbiosisAn association between two or more species
CommensalismsTwo species living together in a relationship such that one benefits and the other neither benefits nor is harmed
HostAny organism that harbors another organism
MutualismBoth members of the association benefit from the relationship


Question Answer
2. (t/f) Contamination,infection, and disease are a sequence of conditions in which the severity of the effects microorganisms have on their hosts increasesTrue
3. Transposal of virulence and attenuation are two techniques that are useful in the production ofVaccines
4. Endotoxins are associated with Gram-negative bacteria and are part of their cell _____ and are released when the cell _____ while exotoxins are produced and released by Gram-positive and some Gram-negative bacteria and are called _____ if they affect the nervous system and _____ if they affect the digestive systemWalls..divides/dies..enterotoxins
5. The best descriptive term for microflora is


Question Answer
6. Which of the following is not true about the transient microfloraThey are present under the same exact conditions, in any of the locations where residen microflora are found
7. Which of the following diseases can be directly caused by microorganismsCongenital disease..Neoplastic disease
8. An iatrogenic disease in a patient caused by Staphylococcus aureus-contaminated surgical instruments would be known as a _____ _____Noscomial infections
9. All of the following are virulence factors exceptChloroplasts
10. Which of the following is not true about the virulence factor coagulaseIt increases the likelihood of exposure to host immune defenses


Question Answer
11. (t/f) A communicable disease cannot be spread from host to host and may be acquired from soil, water or contaminated food while a noncommunicable disease is a contagious disease that can be spread from one host to anotherFalse
12. An example of a latent disease isChicken pox/shingles
13. Which of the following would be a septicemiaSystemic infection
14. The presence of a few,nonmultiplying bacteria in the blood is termedSecondary infection
15. Which of the following infectious disease stages is mismatchedDecline phase-host defenses are overwhelmed by pathogen


Question Answer
16. Viral damages to cells produce observable changes called the _____ effect. Viral infections that lead to release of viral progeny are known as _____ infections while those resulting in no infectious progeny are known as _____ infectionsCytopathic..productive..abortive
17. A positive antibody test for HIV would be a _____ of diseaseSign
18. Which of the following is not a condition of Koch's postulatesProduce a vaccine
19. A laboratory bench with bacteria spilled on it could be correctly referred to as whatContaminated
20. A _____ is an observable effect of a disease while a _____ is an effect of a disease felt by the infected person. A _____ is a group of signs and symptoms that occur togetherSign..symptom..syndrome


Question Answer
21. Which of the following is mismatchedAbortive infection-too few organisms present to produce typical signs and symptoms
22. The presence of Staphylococci on healthy skin helps to prevent pathogenic bacteria from colonizing and causing disease. This is an example ofMicrobial antagonism
23. _____ are soluble substances secreted from bacteria into host tissues, whereas _____ are part of the bacterial cell wall and enter host tissues during division or after cell deathExotoxins/endotoxins
24. Botulinum toxin is an example of a(an)Exotoxin
25. (t/f) Latent viral infections are brought under control by the use of drugsFalse


Question Answer
26. Trace the course of a disease in the accompanying graph. Identify stages (a) through (f) and relate each to signs and symptoms and to activities of a pathogen(a) The incubation period is the time between infection and the appearance of signs and symptoms..(b) The prodromal phase is the period during which pathogens invade tissues.. it is marked by early nonspecific symptoms.. (c) The illness phase is the period during which is the individual experiences the typical signs and symptoms of the disease. During this phase, the signs and symptoms reach their greatest intesity at the acme..(d) The acme is the time when the signs and symptoms subside and the pathogens..(f) The convalescence period is the stage during which tissue damage is repaired and the patient regains strenght.