Homophilic interactions between cells involve interactions

a. among adhesion molecules of the same molecular class.
b. among adhesion molecules of different molecular classes.
c. between integrins and ICAMs.
d. between cadherins and -catenin.


Ans: a. among adhesion molecules of the same molecular class.

Biology & Microbiology

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a. linked genes b. different alleles of the same gene c. a trisomy resulting from nondisjunction d. linked genes that are not physically possible since the recombination frequencies do not add up e. three inverted genes

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Resource partitioning is the result of

a. parasitism. b. mutualism. c. competition. d. predation. e. commensalism

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When sperm enter the epididymis, they ________

A) are mature B) are incapable of moving on their own C) are ready to fertilize an egg D) come from the vas deferens

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In flowering plants, the ____ generation is dominant

a. haploid gametophyte b. diploid gametophyte c. haploid sporophyte d. diploid sporophyte e. triploid endosperm

Biology & Microbiology