Exam 2: Nucleic Acids Flashcards
1
Q
What are the monomers of nucleic acids?
A
nucleotides
2
Q
3 components of nucleotides
A
Phosphate group, ribose (5C sugar), nitrogenous base
3
Q
Does DNA or RNA have an OH group on the second carbon of ribose?
A
RNA
4
Q
What are the three pyrimidines?
A
C, U, T
5
Q
What are the 2 purines?
A
A, G
6
Q
Are purines or pyrimidines larger?
A
Purines
7
Q
4 differences between DNA and RNA
A
- RNA has OH on second carbon
- T (DNA) vs U (RNA)
- DNA is double stranded, RNA is single stranded
- DNA has 1 form, RNA has many
8
Q
3 components of ATP
A
adenine, 3 phosphate groups, ribose
9
Q
What holds nucleotides together/polymerizes them into nucleic acids?
A
Phosphodiester linkages
10
Q
How do phosphodiester linkages form?
A
Condensation/dehydration synthesis b/t hydroxyl on sugar of one nucleotide and phosphate group of a second nucleotide
11
Q
What is 5’ to 3’?
A
Order of nucleic acid…phosphate group on 5th C at the top and hydroxyl group on 3rd C at the bottom
