In Escherichia coli, if ?70 is not bound to RNA polymerase core enzyme, active transcription of the gene is not occurring.
Answer the following statement true (T) or false (F)
False
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Based on the colligative properties of water, what would happen if one were to add a solute to water?
A. The freezing point of water would decrease. B. The freezing point of water would increase. C. The boiling point of water would increase. D. Both the freezing point of water would decrease and the boiling point of water would increase. E. Nothing would change with respect to the freezing point or boiling point of water.
Photosynthesis takes place mainly in the
a. stomata. b. vascular bundles. c. cuticle. d. lower and upper epidermis. e. mesophyll tissue.
Why does DNA synthesis only proceed in the 5? to 3? direction?
a. Because DNA polymerases can only add nucleotides to the 3? end of a polynucleotide strand. b. Because the 3? end of the polynucleotide molecule is more electronegative than the 5? end. c. Because that is the direction in which the two strands of DNA unzip. d. Because that is the only direction that the polymerase can be oriented. e. Because the chromosomes are always aligned in the 5? to 3? direction in the nucleus.
A S. aureus culture was susceptible to phage types 7, 54, and 77. To which lytic group does this strain of S. aureus belong?
A) I B) II C) III D) IV