Nucleotides

Question 1

What are the two basic components of nucleotides and nucleosides?

Answer 1

1. Pentos sugar
2. Nitrogenous base

Question 2

What is the difference between a nucleotide and a nucleoside?

Answer 2

• A phosphate group
• No phosphate = nucleoside
• Phosphate = nucleotide

Question 3

Name the pyrimidines?

Answer 3

• Cytosine
• Thymine
• Uracil

Question 4

Name the purines?

Answer 4

• Adenine
• Guanine

Question 5

What are purines and pyrimidines used to form?

Answer 5

The nitrogenous bases of nucleic acids

Question 6

What are nucleic acids?

Answer 6

• DNA & RNA
• Large molecules made up of chains of nucleotides

Question 7

What are some of the functions of nucleic acids?

Answer 7

• Store genetic info.
• Transcription of genetic info (mRNA)
• Processing of genetic info
• Protein synthesis (tRNA —> rRNA)

Question 8

what is the difference between nucleotides, nucleosides, and nucleic acids?

Answer 8

Nucleic acids are polymers that are made up of long chains of nucleotides, each nucleotide contains a nucleoside region (no phosphate group)

Question 9

What is the difference between ribonucleotides and deoxyribonucleotides?

Answer 9

Deoxyribonucleotides
- H in 2’ position
- DNA
- A, G, T, C

Ribonucleotides
- OH in 2’ position
- RNA
- A, G, U, C