Which of the following agents is capable of inducing conversion of a prophage to the lytic cycle?
A) UV light
B) X rays
C) presence of +ssRNA
D) both UV light and X rays
E) both UV light and the presence of +ssRNA
D
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Mutations in promoter regions of a gene are most likely to _____
a. prevent mRNA from being synthesized b. trap mRNA inside the nucleus c. prevent mRNA from being recognized by the ribosome d. prevent mRNA from being post-transcriptionally modified e. alter the amino acid sequence
In the first stage of cell reproduction, the _____________ disappears.
Fill in the blank(s) with the appropriate word.
________ provide valuable flood control because they can hold large volumes of water
Fill in the blank(s) with correct word
Upon analysis of the primary structure of an unknown protein, it is shown that almost all of the amino acids of this protein are shown to be hydrophobic. What could be said of this protein?
a) Nothing can be discerned about this protein from its primary structure since we cannot predict its structure. b) This protein most likely resides in the cytoplasm. c) This protein is a steroid hormone. d) This protein is most likely a DNA binding protein. e) This protein probably resides in a membrane.