The arrangement illustrated in Figure 11.1 is known as
A. staphylococcus.
B. palisades.
C. streptobacillus.
D. sarcinae.
E. tetrad.
Answer: B
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The ozone layer is known to thin above what
region(s)? a. Antarctica b. the equator c. 60 degrees north and south latitudes d. 30 degrees north and south latitudes e. all of these
What molecule is the body’s main energy source?
a. oxygen b. carbon dioxide c. glucose d. fats e. proteins
What signaling pathway commonly makes use of a G protein to transduce the signal?
A. Steroid hormone receptor pathways B. Receptor tyrosine kinase pathways C. Channel-linked receptor pathways
Under which of the following evolutionary explanations for disease does antagonistic pleiotropy fall?
a. Natural selection has not had time to catch up with environmental changes. b. Natural selection lacks foresight; we are stuck with historically contingent relics of the past. c. Natural selection favors reproductive success, even at the expense of vulnerability to disease. d. Some disease symptoms, though unpleasant, are actually beneficial.