Viruses are not considered "living" by some biologists because they
a. have no metabolism.
b. do not reproduce.
c. cannot move.
d. contain protein.
A
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In graph (b) in the figure above, which of the following best explains the data given about Lotus corniculatus?
A) This plant grows best when AMF taxa A or C are present. B) Lotus corniculatus does not form mycorrhizal associations. C) Mycorrhizal fungi parasitize the plant's roots when they are present, reducing its growth. D) This plant forms multiple AMF associations, growing best with increased fungal diversity.
Inherited mutations in the Xist promoter lead to defects in which epigenetic process?
A) RNAi B) X-inactivation C) genomic imprinting D) position effect variegation E) methylation of CpG islands
The ability of oxygen to combine with and detach from hemoglobin is influenced by all of the
following factors except:a. percent oxygen saturation. b. temperature. c. carbon dioxide concentration. d. tidal volume. e. pH.
Optical density
A. is directly related to the population of bacteria B. is used to measure bacterial toxicity C. None of these D. is directly related to the length of bacteria E. is measured by spread plate technique