OpenStax Biology: Chapter 14 DNA Structure And Function

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

• primase
• topoisomerase
• DNA polymerase
• helicase

The ends of the linear chromosomes are maintained by

• helicase
• primase
• DNA polymerase
• telomerase

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

• 3'-AATGCTAC-5'
• 3'-CATCGTAA-5'
• 3'-TTACGATG-5'
• 3'-GTAGCATT-5'

In eukaryotes, what is the DNA wrapped around?

• single-stranded binding proteins
• sliding clamp
• polymerase
• histones

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

• radioactive phage were found in the pellet
• radioactive cells were found in the supernatant
• radioactive sulfur was found inside the cell
• radioactive phosphorus was found in the cell

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

• mismatch repair
• DNA polymerase proofreading
• nucleotide excision repair
• thymine dimers

DNA double helix does not have which of the following?

• antiparallel configuration
• complementary base pairing
• major and minor grooves
• uracil

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

• single-stranded binding proteins
• helicase
• origin of replication
• ligase

Which of the following does the enzyme primase synthesize?

• DNA primer
• RNA primer
• Okazaki fragments
• phosphodiester linkage

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

• conservative
• semi-conservative
• dispersive
• none of the above