__________ is characterized by cold temperatures, little precipitation, and few or no trees
a. Taiga
b. Chaparral
c. Savanna
d. Tundra
e. Desert
D
You might also like to view...
Allosteric inhibitors are often ____
a. substrates of the reactions they regulate b. products of the reactions that they regulate c. charged amino acids in the active site d. large, complex organic molecules e. competitive inhibitors
The general term for a state where two organisms live together in close association is ____
a. commensalism b. parasitism c. mutualism d. predation e. symbiosis
In humans spermatogenesis and oogenesis differ in a number of ways. Which of the following is NOT one of them?
a. number of functional gametes produced by a single meiosis event b. ploidy of final meiotic products c. timing of meiotic divisions (when they occur in the male/female life cycle) d. number of gametes produced in a given time period e. all of these are differences between human male and female gametogenesis
Speciation has become complete when
A) two populations of organisms have been separated for a very long time. B) a change in allele frequency has occurred. C) organisms of one population do not recognize the mating call of another population and so mating does not occur. D) offspring of mating from members of two different populations are able to mate with members of either population.