Some of the olfactory receptor (OR) genes in humans
A. have been inactivated, reducing our olfactory capabilities compared to other primates.
B. have been activated, enhancing our olfactory sense compared to other primates.
C. have duplicated more frequently, resulting in increased paralogs compared to other primates.
D. have been conserved more rigidly, resulting in increased orthologs compared to other primates.
A. have been inactivated, reducing our olfactory capabilities compared to other primates.
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The overall rate of a reaction is dependent on which of the following?
A. the concentration of the product only B. the rate of the slowest or rate-limiting step of the reaction C. the number of steps in a reaction mechanism D. the formation of enzyme-linked intermediates E. the free energy of the surroundings
According to the Endangered Species Act, what is required when a species is identified as at-risk?
a. A management plan to protect the species must be created. b. Land must be purchased by the government to protect the species. c. A biodiversity hotspot must be established to protect the species. d. The habitat of the species must be maintained or restored.
__________ is the arrival of pollen grains on a
receptive stigma. Fill in the blank(s) with the appropriate word(s).
What organism is most likely to use anaerobic respiration?
a) bird b) moss c) tree d) yeast