The left and right hemispheres of the brain are linked by tracts that cross in the area called the
A. thalamus.
B. corpus striatum.
C. corpus callosum.
D. medulla oblongata.
Answer: C
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Bacterial resistance to antibiotics has evolved due to widespread use of antibiotics ________
a. in humans under nonessential circumstances b. all of the choices c. to fight bacterial diseases d. as a preventive measure in animal feed
Imagine an earthworm that has no chaetae. How would the lack of chaetae affect movement of the earthworm?
A. The earthworm would have difficulty changing locations, since it cannot anchor itself in the soil. B. The earthworm would be much flatter than normal since it has no hydrostatic skeleton. C. The earthworm would only be able to extend its body segments. D. The earthworm would only be able to shorten its body segments. E. The earthworm would not be able to move at all. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the function of chaetae? What other information is related to the question? Choose Answer · Given what you now know, what information is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Antihistamines are most likely to interfere directly with which of the following nonspecific immune responses?
a. constriction of bronchioles b. leaking of fluid into infected tissues c. production of mucus d. production of antibody e. activation of natural killer cells
____ are two muscles that contract at the same time to produce an action
Fill in the blank(s) with the appropriate word(s).