Unit 1- Lecture 1

Question 1

What is the monomer of DNA?

Answer 1

Nucleotide

Question 2

What are the 3 parts of a nucleotide

Answer 2

1. Sugar
2. Base
3. Triphosphate

Question 3

Why is the sugar called 2 deoxyribose

Answer 3

The carbon in the 2 position does not have a hydroxyl group, instead it has 2 hydrogens

Question 4

What are the 4 bases?

Answer 4

1. Adenine
2. Guanine
3. Cytosine
4. Thymine

Question 5

How many rings do purines have?

Answer 5

2 rings

Question 6

How many rings do pyrimidines have?

Answer 6

1 ring

Question 7

Which bases are purines?

Answer 7

Adenine and Guanine

Question 8

Which bases are pyrimidines?

Answer 8

Thymine and Cytosine

Question 9

On the nucleotide what is attached to carbon 1?

Answer 9

Base

Question 10

On the nucleotide what is attached to carbon 3?

Answer 10

Hydroxyl group that connects to triphosphate of next nucleotide

Question 11

On the nucleotide what is attached to carbon 5?

Answer 11

Triphosphate group

Question 12

What does the triphosphate group do?

Answer 12

Provides energy for polymerization

Question 13

On the nucleotide what is attached to carbon 2?

Answer 13

If DNA: 2 hydrogen groups
If RNA: OH group

Question 14

What is the polymer of DNA?

Answer 14

Nucleic acid (chain of nucleotides)