Early blood cells and germ cells that become gametes arise from the
a. allantois.
b. amnion.
c. chorion.
d. umbilical cord.
e. yolk sac.
E
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In a mutualistic relationship with a plant, the fungus receives
a. minerals. b. protection. c. sugar. d. water.
Blood pressure is ____
a. normal at 140/90 mm Hg b. greater in the veins than arteries c. the fluid pressure exerted on a vessel wall d. considered hypertensive at 110/70 mm Hg e. generated by the contraction of the atria
Which of the following statements regarding viral diseases is false?
A) RNA viruses tend to have an unusually high rate of mutation because their RNA genomes cannot be corrected by proofreading. B) New viral diseases often emerge when a virus infects a new host species. C) Very few new human diseases have originated in other animals because the genetic differences are too great. D) AIDS was around for decades before becoming a widespread epidemic.
The drug Humulin is a modified form of the human insulin protein that is used to treat diabetes. Describe the process that would allow a drug company to take the gene responsible for producing this protein and, using bacteria, produce large amounts of
this human protein. What will be an ideal response?