DNA Replication

Question 1

Unzipping done with…

Answer 1

an enzyme called helicase

Question 2

What things come in to keep the DNA from reforming its double helix?

Answer 2

Single- strand binding proteins (SSBs)

Question 3

What is used when free bases in the nucleus attach to exposed bases?

Answer 3

DNA polymerase

Question 4

What direction do free bases attach to exposed bases?

Answer 4

5’ to 3’

Question 5

Area where DNA separates

Answer 5

Replication fork

Question 6

Things that are needed on the strands to begin them

Answer 6

primers (RNA primers)

Question 7

What are RNA primers made by?

Answer 7

RNA primase

Question 8

What DNA polymerase builds DNA?

Answer 8

DNA polymerase III

Question 9

What DNA polymerase removes the primer and inserts DNA into the “gap”?

Answer 9

DNA polymerase I

Question 10

DNA polymerase that can also repair DNA

Answer 10

DNA polymerase I

Question 11

What forms the phosphodiester bond between the unattached nucleotides?

Answer 11

DNA ligase

Question 12

Makes leading and lagging strand of DNA

Answer 12

DNA polymerase III

Question 13

Transcription

Answer 13

copy DNA onto mRNA

happens in nucleus

Question 14

Translation

Answer 14

RNA directs the assembly of a protein

happens in ribosomes

Question 15

Promoter

Answer 15

RNA polymerase binds to the promoter to start the production pf mRNA

Question 16

Operator

Answer 16

A segment of DNA to which a represser can bind which will prevent RNA polymerase from binding

Question 17

Introns

Answer 17

Large pieces are removed from RNA molecules transcribed from genes before they become functional

Question 18

Exons

Answer 18

Pieces remaining after Introns are removed