Plasmids can carry genes that are useful to the host bacteria. These genes encode proteins that can extend the range of environments that can be exploited by the bacteria. Which of the following would be a benefit to the host bacteria?
A. a plasmid that confers sensitivity to antibiotics
B. a plasmid that protects the bacteria from the host animal's immune response
C. a plasmid that encodes an agent that facilitates tissue colonization
D. a plasmid that confers antibiotic sensitivity and protects against a host's immune response
E. a plasmid that protects against a host's immune response and facilitates tissue colonization
E
You might also like to view...
The early Earth's reducing atmosphere probably contained all of the following except
A. carbon dioxide. B. water. C. oxygen. D. hydrogen sulfide. E. methane.
These two different lifestyles are an example of a __________
a. resource b. tradeoff c. habitat d. constraint
Multigene families arise from _____
a. a single gene duplication event b. repeated cycles of gene duplication followed by mutation
c. single point mutations d. exon shuffling e. deletions of genes
Which of the following structures is considered to be the pacemaker of the heart?
a. atrioventricular node b. sinoatrial node c. atrioventricular bundle d. Purkinje fibers e. intercalated discs