Elena and Lenski's generational experiment with E. coli demonstrated that bacteria could evolve to metabolize:
A. lactose.
B. glucose.
C. citrate.
D. nitrogen.
E. succinate.
Answer: E
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Although Dolly the cloned sheep and her nucleus donor are clones, they do not contain the same ________ DNA.
Fill in the blank(s) with the appropriate word(s).
The function of carbonic anhydrase is to increase the rate ____
a. of conversion of CO2 and H2O into HCO3? and H+ b. of conversion of HCO3? and H+ into CO2 and H2O c. at which CO2 binds to hemoglobin d. at which O2 binds to hemoglobin e. of conversion of HCO3? and H+ into CO2 and H2O, and the rate at which CO2 binds to hemoglobin
The monarch butterfly is poisonous to birds
and so birds avoid eating them. Viceroy butterflies look very similar to monarch butterflies but are not poisonous. Because they look like monarch butterflies, birds also do not eat viceroy butterflies. This is an example of
a. resource partitioning. b. competitive exclusion. c. mimicry. d. camouflage. e. commensalism
Blood passing out of arterioles next enters the ____
a. capillaries b. arteries c. veins d. venules e. lymphatic vessels