DNA replication (I2I)

Question 1

DNA replication

Answer 1

Production of two identical DNA molecules from one original template molecule.

Question 2

DNA replication take place after cell division.True or False?

Answer 2

False
before cell division (s phase)

Question 3

DNA replication takes place during _____ of cell division.

Answer 3

S phase (synthetic phase)

Question 4

DNA replication is ______.Why?

Answer 4

semiconservative
bcus new made strands contain single strand of template DNA.

Question 5

DNA replication takes place on ______ of chromosomes.

Answer 5

Origin of replication

Question 6

Types of DNA in prokaryotes and its origin of replication

Answer 6

Circular DNA
Only one origin of replication

Question 7

Types of DNA in eukaryotes and its origin of replication

Answer 7

Linear DNA
Thousands of origin of replication

Question 8

DNA replication directs ______ the replication fork.

Answer 8

towards the replication fork

Question 9

The template strands must be separated in order to replicate.True or False?

Answer 9

True

Question 10

Replication takes place on both strands simultaneously.True or False?

Answer 10

True

Question 11

Replication takes place from every origin of replication at the same time in eukaryotic cell.True or False?

Answer 11

True

Question 12

Enzyme that separates two strands of template DNA

Answer 12

Helicase

Question 13

Function of Helicase

Answer 13

separate two strands of template DNA

Question 14

Function of single strand binding proteins

Answer 14

Stablizie the unwound template strands

Question 15

Function of topoisomerase

Answer 15

Relieve super coiling by breaks and rejoins the strand ahead the replication fork.

(DNAရဲ့backboneမှာရှိတဲ့phosphodiester bondကိုဖျက်ပြီးပြန်ဆက်ပေး)

Question 16

Enzymes that synthesize DNA

Answer 16

DNA polymerase 3

Question 17

Function of DNA polymerase 3

Answer 17

to synthesize new DNA strands by adding nucleotide

Question 18

Can DNA polymerase 3 initiate replication by itself?

Answer 18

No
it need primer in order to initiate replication.

Question 19

Function of primase

Answer 19

to synthesize RNA primer in order to initiate replication

Question 20

Nucleoride of Primer

Answer 20

RNA primer -Ribonucleotide

Question 21

DNA pol 3 can synthesize new strands only in ______ direction.

Answer 21

5’ to 3’ direction

(3’ OH endကိုပဲnucleotides အသစ်တွေပေါင်းပေးနိုင်)

Question 22

Replication direction according to newly synthesized strand

Answer 22

5’ to 3’ direction

Question 23

Replication direction according to template strand

Answer 23

3’ to 5’ driectionကိုပဲဖတ်ပြီး အသစ်တွေထည့်သွား