Bio 12
Sec 2.8
p40-41
Nucleic Acids
Name: ___________________
Date: ___________________
Block: _______
Take a look at the following images and use them to make predictions as
directed by your teacher
Bio 12
Sec 2.8
p40-41
Nucleic Acids
Name: ___________________
Date: ___________________
Block: _______
Make predictions about the answers to the questions below using the
pictures that were provided on a separate sheet. Use point form.
1. Is a nucleic acid a polymer or a monomer? Explain.
A nucleic acid is a polymer. It is a very big molecule made up of
many smaller monomers (nucleotides) joined together.
2. What are the 3 “subunits” that make up a nucleotide?
i) Sugar (pentose)
ii) Nitrogenous Base
iii) Phosphate Group
Note: RNA nucleotides-sugar is ribose, bases can be U, G, C or A
DNA nucleotides: sugar is deoxyribose, bases can be T, G, C, or A
3. a) What do Adenine, Thymine, Guanine, Cytosine and Uracil have in
common?
They are all nitrogenous bases & needed to form a nucleotide
b) What differentiates Adenine and Guanine from the others?
Adenine and Guanine have 2 rings in their structures
4. What do DNA and RNA have in common?
DNA and RNA are both:
-Nucleic Acids
-made up of nucleotides joined
together
-polymers/macromolecules.
-needed to make protein
5. What differences do you see between DNA and RNA?
Sugars are different:
DNA- deoxyribose vs RNA- ribose sugar
Nitrogenous Bases are different
- DNA: A,T, C, G RNA: Uracil not Thymine
Functions differ:
DNA- replication and protein synthesis RNA- protein synthesis
Structural Differences:
DNA- double strand RNA- single strand
Location Differences
DNA- in nucleus vs RNA moves to cytoplasm and ribosome
6. What does ATP stand for? How many phosphate groups are there?
Adenosine Triphosphate
3 phosphate groups
7. What type of sugar is in ATP?
A pentose sugar