Micro Ch 19 1. An organism that cannot leave a host is non-communicable A. True

Question

Micro Ch 19

1. An organism that cannot leave a host is non-communicable
       A. True
       B. False

2.Which is not true of a reservoir?
      A. A reservoir is an environment where the organism can live indefinately
      B. A reservoir is an environment where an organism can reproduce and spread to other hosts
      C. A reservoir is an environment where an organism survives only for a short time.

      D. B and C

3. Communicable diseases are often caused by normal flora
   A. True
       B. False

4. 6 out of 80 susceptible individuals exposed to virus A showed signs of infection. The attack rate of the virus is
       A. 6 %
       B. 7.5%
       C. 80%
       D. 10%

5. According to the latests CDC report, reported cases of three nationally notifiable STDs (Sexually Transmitted Diseases), have increased for the first time since 2006. In 2014, there were 350,062 cases of gonorrhea reported. These number represents:
       A. the prevalence of gonorrhea in 2014
       B. the incidence of gonorrhea in 2014
       C. the morbidity of gonorrhea
       D. the attack rate of gonorrhea


6. By the end of 2012, 1.2 million persons age 13 and older were living with HIV infections in the US. according to the CDC. This number represents the
       A. prevalence
       B. incidence
       C.attack rate
       D. morbidity

Explanation / Answer

1.A True. Non communicable cannot soread through any medium

2 A. A reservior may run out of resources

3. B. False as they are caused generally caused by organisms of Monera and Protista

4. B. 7.5%

5.D

6 D.

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