The sigma factor that mediates a global heat shock response in E. coli is
A) sigma 70.
B) sigma 32.
C) sigma 34.
D) sigma 72.
E) sigma 36.
B) sigma 32.
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What does the term carrying capacity mean?
a. the minimum number of offspring necessary to maintain the gene pool b. logistic growth in a particular population c. the maximum population an environment can support d. birth rate minus death rate
In transcription,
a. several RNA molecules are made from the same DNA molecule. b. a promoter sequence is needed. c. DNA produces messenger RNA. d. a specific enzyme called RNA polymerase is required. e. all of these occur.
Semen does not contain
a) prostate fluid b) urine c) fructose d) prostaglandins e) both b and d are correct
You are studying a newly discovered prokaryotic microorganism and are attempting to determine whether it will be classified in the domain Bacteria or in the domain Archaea. All of the following would be helpful in making that distinction except ________.
A. type of membrane lipids B. presence or absence of double-stranded circular DNA genome C. presence or absence of peptidoglycan in cell walls D. sequence of small subunit ribosomal RNA