What Purpose Do Restriction Enzymes Play in Bacterial Cells

question 83

Multiple Choice

What purpose do restriction enzymes play in bacterial cells?

• A) Restriction enzymes prevent the overproduction of mRNA in the bacterial cell.
• B) Restriction enzymes attack bacteriophage DNA when it enters the cell.
• C) Restriction enzymes promote bonding of the RNA polymerase to the promoter.
• D) Restriction enzymes limit the rate of bacterial replication.
• E) Restriction enzymes connect Okazaki fragments.

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Definitions:

Chymotrypsin

Proteolytic enzyme formed in the small intestine from the pancreatic precursor chymotrypsinogen.

Ribonuclease

Enzyme that splits RNA into its component nucleotides.

Defecation Reflex

Combination of local and central nervous system reflexes initiated by distension of the rectum and resulting in the movement of feces out of the lower colon.

Gastrocolic Reflexes

Reflexes that mediate the increase in motility of the colon in response to food entering the stomach.