Which of the following hormones are most
closely related to the health problems of the
poor?
a. aldosterone
b. ADH
c. cortisol
d. glucagon
e. thryroxin
C
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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of
A) microbiology. B) immunology. C) epidemiology. D) virology.
The fact that humans have a relatively large number of mutations per genome per generation when compared to other organisms can be explained by:
A. humans are so complex we have multiple proteins doing the same job. B. human cells don't divide as often as those of other organisms. C. most of a human's DNA is noncoding, so most of the mutations are neutral. D. most of these mutations happen after reproduction, so they wouldn't be selected against. E. humans have multiple proteins doing the same job, and our cells don't divide as often as other those of other organisms.
Which of the following effects may be mediated by transposable elements?
A. Genetic deletions may form. B. Activation of nearby genes may occur. C. A mutation may result from insertion into a gene. D. All of the choices are correct.
Systemic acquired resistance is
A. a broad-ranging resistance that lasts for a period of days. B. a response whereby antibodies recognize specific antigens. C. a response that occurs when the hypersensitive response fails. D. the same as the human immune response. E. a method for plants to modify their DNA for protection.