Question

question 1
match the correct item to the correct term
this enzyme breaks hydrogen bonds between the nucleotide base pairs to \unzip\ the double helix
this enzyme adds new nucleotide to an rna primer to extend the new daughter strand
this enzyme joins okazaki fragments to make a continuous dna strand
this enzyme initiates the synthesis of the daughter strand by laying down a short stretch of complimentary rna nucleotides
if the template strand is oriented 5 to 3 it will give rise to the
if the template strand is oriented 3 to 5 it will give rise to the
this is formed during bidirectional replication to speed up replication
this is where the next nucleotide is attached to the growing daughter strand
the meselson-stahl experiment proved this
dna polymerase can reverse to edit a mistake and this activity is called
a. exonuclease
b. semi-conservative replication
c. dna polymerase
d. lagging strand
e. rna polymerase
f. helicase
g. replication bubble
h. watson-crick
i. 3 end
j. single stranded binding proteins
k. leading strand
l. origin of replication
m. ligase
n. primase
o. topoisomerase

Explanation:

• Helicase (F): Breaks hydrogen bonds between nucleotide base pairs to unzip the double helix.
• DNA polymerase (C): Adds new nucleotides to an RNA primer to extend the new daughter strand.
• Ligase (M): Joins Okazaki fragments to make a continuous DNA strand.
• Primase (N): Initiates the synthesis of the daughter strand by laying down a short stretch of complementary RNA nucleotides.
• Lagging strand (D): Formed when the template strand is oriented 5' to 3'.
• Leading strand (K): Formed when the template strand is oriented 3' to 5'.
• Replication bubble (G): Formed during bidirectional replication to speed up replication.
• 3' end (I): Where the next nucleotide is attached to the growing daughter strand.
• Semi - Conservative replication (B): Proved by the Meselson - Stahl experiment.
• Exonuclease (A): DNA Polymerase can reverse to edit a mistake and this activity is called exonuclease activity.

Answer:

1. F. Helicase
2. C. DNA polymerase
3. M. Ligase
4. N. primase
5. D. Lagging strand
6. K. Leading strand
7. G. replication bubble
8. I. 3' end
9. B. Semi - Conservative replication
10. A. Exonuclease