Physiological responses to chronic stress interfere with ________
a. cardiovascular function only
b. the immune system only
c. growth only
d. all of the choices
d
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A species that is naturally found only in a particular location is called
A. extinct. B. endemic. C. extinct due to the action of humans. D. exotic. E. transitional.
Suppose a woman has four sons, and two are color blind but have normal blood clotting and two have hemophilia but normal color vision. What is the probable genotype of the woman?
In humans, the genes for red-green color blindness (R = normal, r = color blind) and hemophilia A (H = normal, h = hemophilia) are both X-linked and only 3 map units apart. A) H R / h r B) H r / h r C) h r / h R D) H r / h R E) H R / H r
Protozoan and helminthic diseases are difficult to treat because
A) their cells are structurally and functionally similar to human cells. B) they replicate inside human cells. C) they do not have ribosomes. D) they do not reproduce. E) they have more genes than bacteria.
All of the energy in an ecosystem eventually becomes
A. detritus. B. body mass. C. heat. D. feces. E. sunlight.