Lesson 5: Nucleic Acids

Question 1

What are nucleic acids composed of?

Answer 1

Nucleotide Monomers

Question 2

What are the three parts of nucleotides?

Answer 2

• Phosphate group
• Pentose ( 5 Carbon Sugar)
  -Nitrogenous Base

Question 3

What sugar is in DNA?

Answer 3

Deoxyribose

Question 4

What sugar is in RNA?

Answer 4

Ribose

Question 5

What are the nitrogenous bases in DNA?

Answer 5

Adenine (A)
Thymine (T)
Guanine (G)
Cytosine (C)

Question 6

What nitrogenous bases are in RNA?

Answer 6

Adenine (A)
Uracil (U)
Guanine (G)
Cytosine (C)

Question 7

What are the two different types of nitrogenous bases?

Answer 7

Pyrimidine: Single organic ring
Purine: 2 ringed organic structures

Question 8

How are nucleotides bonded?

Answer 8

-Covalently

Question 9

What kind of bonding creates the strands in the nucleic acid?

Answer 9

Phosphodiester bonds

Question 10

What kind of bonding occurs between the nitrogenous bases to keep the double helix together?

Answer 10

Hydrogen bonds

Question 11

What are the base pairs in DNA?

Answer 11

A & T, C &G

Question 12

What are the base pairs in RNA?

Answer 12

A & U, C & G

Question 13

What is ATP?

Answer 13

Adenosine Triphosphate is the energy molecule for biological systems.

Question 14

What are the components that make up ATP?

Answer 14

Adenosine, ribose, and three phosphate groups

Question 15

How are the second and third phosphate in ATP bonded?

Answer 15

High energy covalent bonds.

Question 16

What is created when the third phosphate group is hydrolysed by ATPases?

Answer 16

ADP + Pi + Energy