The natural role of restriction enzymes in bacteria is to
A) make conjugation more efficient.
B) allow transposons to move to another place in the chromosome.
C) protect the cell from invading phages.
D) allow cells to accept foreign DNA.
E) provide the cell with new phenotypes, such as antibiotic resistance.
C
You might also like to view...
In retroviruses, what helps the newly synthesized dsDNA insert itself into the host genome?
A. Gag polyprotein B. Integrase C. Reverse Transcriptase D. Provirus
What properties are attributable to phenolics?
_____ antioxidants in red wine. _____ the sweetness of honey. _____ the flavor of vanilla. _____ the absorption of ultraviolet radiation. _____ the flavor of chilies.
Which causes the most stress to overloaded municipal wastewater plants?
A. Antibiotic resistant bacteria in the system B. Population growth associated with increased volume delivered to the plant C. Too many people who flush prescription drugs down the toilet D. Global warming
Fungi play what important role in the environment?
A. They perform photosynthesis and release oxygen into the atmosphere. B. They are one of the few organisms that degrade lignin. C. They form symbiotic relationships with plants. D. Both A and B E. Both B and C F. All of the above