The "natural" use of restriction enzymes by bacteria is to
a. integrate viral DNA.
b. cut apart short sequences of bases in DNA.
c. repair "sticky ends."
d. copy the bacterial genes.
e. clone DNA.
B
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Moths have an Ig-family protein called ____, which binds to pathogens and enhances their
phagocytosis.
a. hemolysin b. cadherin c. bradykinin d. hemolin e. defensin
For Mendel's law of segregation to occur, the alleles must be
a) on different loci (= locations) on different chromosomes. b) on a nonhomologous pair of chromosomes. c) on a homologous pair of chromosome at the same loci (= locations). d) at the same loci (= locations) on the same chromosome. e) at different loci (= locations) on the same chromosome.
A coyote eats a variety of animals and even consumes a little plant matter, so it would be best characterized as ________
A) a consumer B) photosynthetic C) a producer D) autotrophic
One big advantage of the XRF measurement is that it does not destroy the sample.
a. true b. false