Biology 2e openstax Chapter 14 Review Questions

If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C?

23 percent

The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the basis of the finding that:

radioactive phosphorus was found in the cell

Bacterial transformation is a major concern in many medical settings. Why might health care providers be concerned?

All of the above.

DNA double helix does not have which of the following?

uracil

In eukaryotes, what is the DNA wrapped around?

histones

Meselson and Stahl's experiments proved that DNA replicates by which mode?

semi-conservative

If the sequence of the 5'-3' strand is AATGCTAC, then the complementary sequence has the following sequence:

3'-TTACGATG-5'

How did Meselson and Stahl support Watson and Crick's double-helix model?

They demonstrated that each strand serves as a template for synthesizing a new strand of DNA.

Which of the following components is not involved during the formation of the replication fork?

ligase

Which of the following does the enzyme primase synthesize?

RNA primer

In which direction does DNA replication take place?

5'-3'

A scientist randomly mutates the DNA of a bacterium. She then sequences the bacterium's daughter cells, and finds that the daughters have many errors in their replicated DNA. The parent bacterium likely acquired a mutation in which enzyme?

DNA pol II

The ends of the linear chromosomes are maintained by:

telomerase

Which of the following is not a true statement comparing prokaryotic and eukaryotic DNA replication?

DNA replication always occurs in the nucleus.

During proofreading, which of the following enzymes reads the DNA?

DNA polymerase

The initial mechanism for repairing nucleotide errors in DNA is ________.

DNA polymerase proofreading

A scientist creates fruit fly larvae with a mutation that eliminates the exonuclease function of DNA pol. Which prediction about the mutational load in the adult fruit flies is most likely to be correct?

The adults with the DNA pol mutation will have significantly more mutations than average.