Name:_______________________________ Date: ____________ Pd. ________
Nucleic Acids
Function of nucleic acids
 The source of ________________________ information in chromosomes

Dictate ________________________________ sequence in proteins

Give information to chromosomes, which is then passed from parent to offspring
Composition
 Monomer = Simple units called ___________________________, connected in long
chains

Nucleotides have 3 parts:
o
______________________________________ (pentose)
o
_________________________________________________________________

o
(made of C, H and N)
A ______________________________ group ( P )

The P groups make the links that unite the sugars (hence a “sugarphosphate backbone”
Two types of Nucleotides (depending on the _____________________ they contain)
 __________________________________ acids (RNA)

o
The pentose sugar is _______________________ (has a hydroxyl group - OH)
o
Phosphate group
o
One of 4 types of nitrogen bases:

Adenine

Uracyl (only in RNA)

Cytosine

Guanine
____________________________________________________ acids (DNA)
o The pentose sugar is ________________________________ (has just an
hydrogen - H)

Deoxy = “minus oxygen”
o
Phosphate group
o
One of 4 types of bases (all containing
nitrogen):

Adenine

Thymine (Only in DNA)

Cytosine

Guanine
Forming a nucleotide chain:
 Formed by ____________________________________________________ reaction.
o

A ___________________ molecule is removed.
Broken apart by _________________________________.
o
A _____________________ molecule is added.