NA 3

Question 1

Where/when does dna synthesis occur in prokaryotes

Answer 1

In the cytoplasm during cell division

Question 2

How does helicase denature DNA

Answer 2

Via hydrolysis

Question 3

What end do Deoxyriboucleotides get added on the newly synthesized strand

Answer 3

3’

Question 4

How many dna polymerases does E. Coli have

Answer 4

5

Question 5

How many dna polymerases do humans have

Answer 5

More than 15

Question 6

Which polymerases do the majority of eukaryotic nuclear
DNA synthesis

Answer 6

δ and ε

Question 7

What is the role of Topoisomerase

Answer 7

cleaves DNA to adjust negative supercoils

Question 8

What is the difference between type 1 and type 2 Topoisomerase

Answer 8

Type 1 cuts one strand and type 2 cuts both

Question 9

What is the role of Single-strand binding (SSB) proteins

Answer 9

stabilize DNA and prevent annealing

Question 10

What is the role primase

Answer 10

enzyme that synthesizes short segments of RNA (i.e. primers)

Question 11

What is the role of ligase

Answer 11

enzyme that joins two DNA fragments together via ATP hydrolysis

Question 12

T/f, prokaryotic dna polymerases have primase activity

Answer 12

False; eukaryotic DNA polymerase α does

Question 13

Eukaryotic dna replication is terminated by

Answer 13

Collision of replication forks

Question 14

What is telomerase

Answer 14

Polymerase that synthesizes and maintain telomeres

Question 15

An adenine for a guanine is an example of what mutation

Answer 15

Transition

Question 16

A purine substituted for a pyrimidine is what kind of mutation

Answer 16

Transverse

Question 17

A silent mutation is when an mRNA codon calls for ______ amino acid

Answer 17

Same

Question 18

Missense mutation calls for ______ amino acid

Answer 18

Different

Question 19

T/f, exons code for a protein

Answer 19

True