Cells taken from a tumor
A. may be used to grow viruses.
B. can be cultivated in vitro indefinitely.
C. may be used to grow bacteriophages.
D. divide 50 times and then die.
E. may be used to grow viruses AND can be cultivated in vitro indefinitely.
E
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Which of the following antibiotics is (are) produced by actinoplanetes?
A. Nalidixic acid B. Gentamicin C. Penicillin D. Cycloserine
Inside the CNS, groups of neuronal cell bodies that are clustered together to perform basic functions are termed
A. nerve nets. B. ganglia. C. nuclei. D. spinal cords. E. soma.
The difference in charge between the inside and outside of a cell is the:
What will be an ideal response?
Two different species of pine release their pollen at different times of the year. This is an example of
A) ecological isolation. B) behavioral isolation. C) mechanical incompatibility. D) geographic isolation. E) temporal isolation.