Researchers Found E

question 6

Multiple Choice

Researchers found E.coli that had mutation rates one hundred times higher than normal.Which of the following is the most likely cause of these results?

• A)The single-stranded binding proteins were malfunctioning.
• B)There were one or more mismatches in the RNA primer.
• C)The proofreading mechanism of DNA polymerase was not working properly.
• D)The DNA polymerase was unable to add bases to the 3' end of the growing nucleic acid chain.
• E)The telomerase activity was low.

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Definitions:

Needle

A slender, sharp instrument typically made of metal, used for injecting substances into the body or withdrawing fluids from it.

Syringe Method

A technique involving a syringe for injecting substances into the body, withdrawing fluids, or applying suction.

Venipuncture

The process of puncturing a vein with a needle to draw blood or administer medication.

Capillary Puncture

A medical technique involving the puncture of a capillary vessel, usually in the finger or earlobe, to obtain a small blood sample for testing.