F+ X F- mating does not result in
a. plasmid genetic recombination.
b. chromosomal genetic recombination.
c. circularization of DNA.
d. conjugation.
e. cell-cell contact via a sex pilus.
B
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The first penicillin-producing fungus that could be grown in stirred fermenters was ________.
A. Penicillium notatum B. Penicillium chrysogenum C. Aspergillus niger D. Pisolithus tinctorius
Exceptions to the genetic code have been identified. Which one of the following is a known exception?
A. A codon might not always encode the same amino acid. B. A single stop codon, UGG, may be the only stop codon recognized. C. Alanine codons instead of methionine codons may be used for the initiation of translation. D. The codons in mitochondria are reversed (e.g., instead of AUG, the methionine codon in mitochondria is GUA).
________ is the process of losing heat into space from a warm object. a. Evaporation b. None of these choices
c. Convection d. Conduction e. Thermal radiation
The term ________ refers to a decrease or complete cessation of glomerular filtration
Fill in the blank(s) with correct word