What kind of enzyme synthesizes the new DNA strand?

RNA polymerase

DNA Polymerase

Primase

Helicase

Topoisomerase

Dna polymerase*

In what direction is the newly synthesized DNA produced?5'-3'

3'-5'

In the direction of the major grooveIn the direction of the minor groove

Both 5'-3' and 3'-5' depending on which strand is being replicated

Both 5-3 and 3-5 depending on which strand is being replicated*

Nucleotides are always added to the growing DNA strand at the 3 end, at which the DNA has a free ______ on the 3 carbon of its terminal deoxyribose. Phosphate groupHydroxyl groupNitrogen baseMethyl groupCarboxyl group

Hydroxyl group*

The E. coli chromosome has 4.7x106 bp; a bi-directional replication fork progresses at about 1000 nucleotides/sec. Therefore, the minimum time required to complete replication is 12 min.24 min.39 min78 min120 min

78 min*

What is the sequence (1 to 6) in which these proteins function during DNA replication ____ RNA primase__ DNA ligase____ DNA polymerase____ Topoisomerase ____ DNA helicase___ tethering proteins

1.Dna helicase2. Topoismerase3. Rna primase4. Dna polymerase5. Dna ligase6.protein*

Why is an RNA primer necessary for DNA replication?

The RNA primer is necessary for the activity of DNA ligase.

The RNA primer creates the 5 and 3 ends of the strand.DNA polymerase can only add nucleotides to RNA molecules.DNA polymerase can only add nucleotides to an existing strand

DNA polymerase is low processice enzyme

B or D*

Dna polymerase*Both 5-3 and 3-5 depending on which strand is being replicated*Hydroxyl group*78 min*1.Dna helicase2. Topoismerase3. Rna primase4. Dna polymerase5. Dna ligase6.protein*B or D*