AP DNA Replication

The two strands of DNA are held together by:

• Hydrogen Bonds

• Phosphodiester Bonds

• Glycolsyl Bonds

• Glycosidic Linkages

Tags

NGSS.HS-LS1-1

The concept that DNA is made of two strands running in opposite directions is called:

• Antiparallel

• Isomerism

• Enantiomerism

• S/R Chirality

Tags

NGSS.HS-LS1-1

Who's work concluded that the %A=%T  and %G=%C

• Chargaff

• Meischer

• Levene

• Hammerling

Tags

NGSS.HS-LS1-1

How do the leading and the lagging strands differ?

• The leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.

• The leading strand is synthesized at twice the rate of the lagging strand.

• The leading strand is synthesized in short fragments that are ultimately stitched together, whereas the lagging strand is synthesized continuously.

• The leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the 5? end.

Which enzyme is needed to start DNA replication?

• DNA Polymerase

• Topoisomerase

• Ligase

• Primase

Which of the following help(s) to hold the DNA strands apart while they are being replicated?

• RNA primase

• single–strand binding proteins

• DNA polymerase I

• DNA ligase

Which enzyme is responsible for adding DNA nucleotides to a RNA primer?

• Topoisomerase

• DNA Polymerase

• Ligase

• Primase

What enzyme keeps DNA from overwinding ahead of replication forks?

• Primase

• Topoisomerase

• Single-Stand Binding Protein

• Helicase

Adds nucleotides to the newly synthesized strand of DNA

• DNA polymerase I

• DNA polymerase III

• Primase

• Ligase

All of the following are enzymes used in replication except

• DNA polymerase

• primase

• helicase

• triptase