Viruses are most closely related, in that they share a common ancestor, to which domain of life?
a. bacteria
b. Viruses are not considered to be part of the tree of life.
c. archaea
Ans: b. Viruses are not considered to be part of the tree of life.
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Ammonia, urea, and uric acid
A. are all nitrogenous wastes. B. all require large amounts of water for excretion. C. all require about the same amount of energy to produce. D. are all equally toxic. E. are all produced by the kidney.
The best stain for the demonstration of Mycobacterium leprae is the:
a) Fite b) PAS c) Kinyoun d) Gram
The phylum of animals that does not show true tissues or symmetry is:
A) Cnidaria. B) Porifera. C) Platyhelminthes. D) Annelida. E) Nematoda.
By knowing the interrelatedness of various snake species, the appropriate antivenom can be chosen. Based on the figure above, which snake antivenom would you administer to a person bitten by an Australian copperhead, if antivenom to the Australian copperh
A) taipan B) common brown snake C) red-bellied black snake D) death adder E) tiger snake