What are the characteristics of red light, which is absorbed by chlorophylls?
A. Its photons have the shortest wavelength in the visual spectrum
B. Its photons have the highest energy in the visual spectrum
C. Its photons have the longest wavelength in the visual spectrum
D. It is not considered a part of the visual spectrum
C. Its photons have the longest wavelength in the visual spectrum
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A deletion of a particular stretch of chromosome 15 can cause either Prader-Willi syndrome or Angelman syndrome, depending on
A. the parental origin of the normal and deleted chromosome. B. whether or not the region is methylated properly. C. whether a translocation event has occurred. D. whether a nondisjunction event has occurred.
Which of the following prevents some bacteria from adhering to mucosal surfaces?
A. IgD B. IgE C. IgM D. IgA
In the endosymbiosis theory, what benefit did the host cell receive from the symbiont?
a. protection b. immune response c. energy d. cytoskeletal elements
Which of the following is the correct sequence of hierarchical taxonomic categories?
A. species - family - genus - domain - order - phylum - class - kingdom B. domain - kingdom - phylum - class - order - family - genus - species C. species - genus - family - order - class - order - phylum - kingdom - domain D. kingdom - class - phylum - order - family - genus - species E. kingdom - class - domain - order - phylum - genus - family - species