In order for bacteriophage to be released from the host by a lysis mechanism, enzymes are required that
A. halt ATP synthesis.
B. stabilize the cytoplasmic membrane and cell wall.
C. degrade the host chromosome.
D. damage the cell wall and cytoplasmic membrane.
Answer: D
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The frequency of recombination is expressed as the ratio of recombinants to the total number of progeny
A. true B. false
In an in vitro translation assay radioactive amino acids can be incorporated into proteins and the proteins separated from the unincorporated amino acids
Given the following data what are the conclusions that you would come to? RNA added to reaction Amount of radioactivity in protein in counts per minute Insulin mRNA alone 10,000 Insulin mRNA with antisense insulin mRNA 3,000 Insulin mRNA with antisense fibronectin RNA 11,000 No mRNA 150 Insulin mRNA with double stranded insulin RNA 500 A. Double stranded RNA is more efficient at inhibiting translation than antisense RNA B. Antisense RNA is more efficient at inhibiting translation than double stranded RNA C. No conclusion about the efficiency of translation inhibiton can be made as the positive and negative controls did not perform appropriately D. The experiment did not work since the antisense fibronectin did not have an effect on amino acid incorporation. Blooms Level:
In monoecious species of plants, plants that have separate "male" and "female" flowers both on the same plant,
applications of gibberellin ____.
a. cause all flowers formed to be "female" b. encourage proportionally more "male" flowers to develop c. cause all flowers formed to actually be both "male" and "female" d. cause all flowers formed to be "male" e. encourage proportionally more "female" flowers to develop
Scientists are always thinking about ways to improve
experimental design. In the text’s potato chip experiment, which of these might do so? a. show a different movie b. exclude teenagers as group members c. collect uneaten chip remains and weigh them for both groups d. provide free drinks e. use a smaller theater