Which of the following would be considered an essential criterion for "life"?
a. accurate replication
b. heterotrophy
c. metabolism
d. multicellularity
e. A and C
Answer: e. A and C
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The scientist who published On the Origin of Species by Means of Natural Selection in 1859 was
A. Georges-Louis Buffon. B. Charles Darwin. C. Charles Lyell. D. James Hutton. E. Jean Lamarck.
Which of the following antimicrobial agents is the most toxic to humans?
A) 70% alcohol B) ethylene oxide C) quaternary ammonium compounds D) chloramines E) iodophors
When epinephrine binds to its G-protein linked receptor ____ is activated producing ___.
A. phospholipase C, diacylglyceride B. kinase, calcium C. kinase, transcription factor D. enzyme linked receptors, protein kinase E. adenylyl cyclase, cAMP
The recent appearance of antibiotic-resistant strains of bacteria is an example of
A) the action of memory cells. B) evolution by natural selection. C) natural immunity. D) inflammation.