In contrast to bioremediation, which as a strategy for ______________, biological augmentation ______________ a degraded ecosystem.
a. replacing extirpated species.... removes man-created pollutants and toxins from
b. eradicating a crippling disease in a keystone species... involves planting fruit and grain bearing crops to provide more forage in
c. removing harmful substances... uses organisms to add essential material to
d. adding new species to control problem species... adds fertilizer to nutrient-poor soils in
e. using organisms to add essential materials... removes harmful substances from
Ans: c. removing harmful substances... uses organisms to add essential material to
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What is the function of the vasa recta?
A. It maintains the concentration gradient established by the loop of Henle. B. It helps determine the final concentration of the urine. C. It filters the blood within the glomerulus. D. It secretes the hormone renin in response to a drop in blood pressure. E. None of these answer options is correct.
In a family pedigree that followed several
generations, Gaucher’s disease was found in family members every other generation and equally in males and females. Gaucher’s disease is most likely a ______ disease.
a. dominant b. recessive c. X-linked d. epistatic e. pleiotrophic
The combination of DNA and its associated proteins is a(n) ____
a. gene b. nucleolus c. centriole d. chromosome e. allele
Some enveloped animal viruses enters a host cell by
A. injecting their DNA or RNA into the host cell. B. fusion of their envelope with the host cell's plasma envelope. C. endocytosis. D. All of the above. E. Both B and C.