Nucleic acids - DNA/RNA Flashcards
1
Q
What is DNA used for?
A
to store genetic information
2
Q
What is RNA used for?
A
to transfer genetic information from DNA to ribosomes
3
Q
What is a nucleotide made from?
A
a pentose sugar
a nitrogen containing compound
a phosphate group
4
Q
What sugar is in DNA?
A
deoxyribose sugar
5
Q
what are the four bases in DNA
A
Adenine, guanine, cytosine and thymine
6
Q
what sugar is in RNA?
A
ribose sugar
7
Q
what base does RNA have instead of Thymine
A
uracil
8
Q
what is a polynucleotide and how is it formed
A
- a polymer of nucleotides and they are formed via a condensation reaction
9
Q
what bond forms between nucleotidea?
A
phosphodiester bond
10
Q
why did scientist doubt that DNA could carry the genetic code?
A
it has a relatively simple chemical composition
