The human leukocyte antigen genes are on the
A) short arm of chromosome 6.
B) long arm of chromosome 18.
C) short arm of chromosome 2.
D) long arm of chromosome 6.
A) short arm of chromosome 6.
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Which of the following is an example of a behavior adaptation?
a. male turtles wiggling their claws in front of female turtles b. salt glands in the Albatross c. the preen gland that produce oil for waterproofing feathers d. a praying mantis that looks like a leaf
The ratio between the uptake of carbon dioxide by photosynthesis and the release of carbon dioxide by respiration is approximately
A. 0.5 (i.e., half as much carbon dioxide is taken up by photosynthesis as is released by respiration). B. 5 (i.e., five times as much carbon dioxide is taken up by photosynthesis as is released by respiration). C. 0.1 (i.e., one-tenth as much carbon dioxide is taken up by photosynthesis as is released by respiration). D. 2 (i.e., twice as much carbon dioxide is taken up by photosynthesis as is released by respiration). E. 1 (i.e., about the same).
Agar
A. is a useful nutrient source for most bacteria. B. is a hydrolysate of proteins. C. stays liquid through the typical range of incubation temperatures. D. has chemical and physical properties that make it almost ideal for solidifying media.
Following a blood clot in the brain, a person is able to say words, but they are unable to put the words
together into complete, correct sentences. Which of the following best explains this person's problem? a. The cortex of the cerebellum was affected by the reduced blood flow. b. The interruption in blood flow affected the corpus callosum. c. The region of the brain responsible for integrating visual and auditory stimuli was damaged. d. Wernicke's area of the temporal lobe was affected by the reduced blood flow. e. Broca's area of the frontal lobe was affected by the reduced blood flow.