Members of the ____ subphylum are mostly insects and were among the first animals to colonize terrestrial habitats
a. Myriapoda
b. Trilobita
c. Chelicerata
d. Hexapoda
e. Crustacea
ANSWER: d
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Your roommate takes up smoking, and you hate it. Use what you know about nicotine to convince her to quit. (Check all statements that are true.)
_____ Nicotine binds to a receptor in the brain that normally receives acetylcholine. _____ Nicotine evolved to protect the tobacco plant by killing grazing cattle. _____ The brain adapts to smoking by changing the levels of this receptor. Over time, more drug is required to get the same effect. _____ Nicotine is not addictive, but is still very dangerous. _____ Nicotine is identical to an endogenous ligand in the human body. _____ Nicotine evolved to protect the tobacco plant by killing insects. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about nicotine? What other information is related to the question? 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?
Which offspring in the illustration below are
homozygous recessive for both traits? a. A b. B c. C d. D e. none of these
Having legs longer than your arms is an example of:
a. an allometric growth pattern. b. an adaptive growth pattern. c. an allopatric growth pattern. d. paedomorphosis. e. a preadaptation.
Where are apocrine sweat glands the most abundant?
a. forehead b. neck c. axilla d. palms of the hands