In which phase would you expect to observe the most endospores in a Bacillus cell culture?
A. death phase
B. lag phase
C. log phase
D. log, lag, and death phases would all have roughly the same number of endospores.
Ans: A. death phase
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At rest, a cell has a ________ charge inside of the cell and a ________ charge outside of the cell.
Fill in the blank(s) with the appropriate word(s).
Which of the following describes a template strand?
a. a DNA strand that specifies the complementary mRNA molecule b. a DNA strand that is not used to transcribe mRNA c. a region of locally unwound DNA that allows for transcription of mRNA d. a sequence present in protein-coding mRNA
A heart attack or myocardial infarction is due to the sudden death of heart tissue due to lack of oxygen.
a. true b. false
A plasmid used as a cloning vector in E. coli must have
A) an ori sequence. B) a selectable marker. C) unique restriction sites. D) B and C E) All of these