Which of the following is NOT an example of an epithelial function?
a. allow diffusion
b. secrete products
c. contract when stimulated
d. protect the body from invasion by bacteria
e. form linings of organs
C
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HBV is mainly spread by
A. blood. B. blood products. C. semen. D. saliva. E. blood, blood products AND semen.
Which molecule is a six carbon compound?
a. PEP b. PGAL c. fructose-1, 6-biphosphate d. pyruvate e. phosphoglycerate (PGA)
Meiosis typically results in the production of
a. two diploid cells. b. four diploid cells. c. four haploid cells. d. two haploid cells. e. one triploid cell.
In his comprehensive theory, Steve Hubbell assumes that all species are competitively equivalent and that they have identical fitnesses— their probabilities of death and reproduction are the same. How do we characterize such species (and, indeed, Hubbell's theory)?
A) polarized B) neutral C) niche-differentiated D) complementary