What role does DNA methylation serve in E. coli DNA replication?
a. Hemimethylated DNA is inhibited from initiating replication.
b. DNA must be fully methylated for replication to be initiated.
c. DNA must be unmethylated for replication to be initiated.
d. DNA must be either hemimethylated or fully methylated for replication to be initiated.
e. DNA methylation has no effect on DNA replication.
Ans: a
You might also like to view...
How do archaeans and bacteria differ?
a. size b. shape c. plasma membrane composition d. absence of a nucleus e. mode of cellular division
An endotoxin is ________.
A. secreted by gram-positive organisms B. indicative of gram-negative bacterial infection C. secreted by pathogenic organisms D. indicative of fungal infections E. indicative of viral infections
The plant pathogen ________ is a member of the alphaproteobacteria that alters plant cells by introducing DNA into them
A) Azotobacter B) Agrobacterium C) Rhizobium D) Pseudomonas E) Bdellovibrio
Which drug blocks the action of pyrophosphatase, thus inhibiting the transport of important molecules for cell wall synthesis across the bacterial membrane?
A. Trimethoprim B. Rifampin C. Linezolid D. Bacitracin