DNA

Question 1

DNA Pol adds nucleotides to the

Answer 1

3’ end

Question 2

In what direction does DNA Pol extend in?

Answer 2

5’ to 3’

Question 3

What is the first AA in polypeptide chain during translation?

Answer 3

Formal Meth

Question 4

Describe DNA Pol I?

Answer 4

• Removes RNA primer

- Has exonuclease activity

Question 5

What happens within the Mismatch Repair System?

Answer 5

There are many proteins which recognize a mismatch in the DNA and will cut the incorrect base

Question 6

What comes in to remove the incorrect nucleotide?

Answer 6

An exonuclease

Question 7

What comes in and adds a new and correct nucleotide within the Mismatch Repair System?

Answer 7

A DNA Pol

Question 8

UV Ray Damage creates

Answer 8

Pyrimidine Dimers

Question 9

How does UV Ray Damage create dimers?

Answer 9

It causes for two identical bases to stick together, getting the identical bases to stick together

Question 10

Pyramidine Dimers can be fixed via

Answer 10

NER

Question 11

How does NER work?

Answer 11

• Endonuclease removes dimers
• DNA Pol will come and bring correct nucleotides
• Ligase will connect everything

Question 12

What is a mismatch capable of?

Answer 12

Distorting DNA

Question 13

What happens to the Adenines in bacterial parental DNA?

Answer 13

Adenines will be methylated

Question 14

Endogenous DNA Damages can occur due to

Answer 14

Reactive O2 species

Question 15

Exogenous DNA Damages can occur due to

Answer 15

• UV Rays
• Gamma Rays
• X Rays

Question 16

What is a normal byproduct of ETC in the mitochondria?

Answer 16

Reactive O2 species

Question 17

Genetic material is lost from the telomeres when

Answer 17

Okazaki fragments are joined

Question 18

In what direction is DNA synthesized when catalyzed by either DNA polymerase or reverse transcriptase?

Answer 18

5’ –> 3’

Question 19

What cleave specific sequences of DNA?

Answer 19

Endonucleases