Download DNA Structure Quiz

1. State whether adenine is smaller or larger than a DNA
molecule, and defend your answer.
2. Snakes, chickens, and lions all use the same four
nucleotides in their genetic code (A, T, C, and G), yet these
organisms look very different from each other. Explain why.
3. Each nucleotide in DNA contains deoxyribose.
a. Explain how deoxyribose is similar to glucose.
b. Explain how deoxyribose is different from glucose.
Deoxyribose
4. Explain how a DNA strand is held together. Include the
parts of the nucleotides that are involved and the type of
bond that joins them together.
5. Explain why the bonds in a DNA backbone must be strong.
6. On the other hand, the bonds that hold together base pairs
are relatively weak.
a. Identify this type of bond
b. Explain why nature has placed weak bonds in such
an important molecule
7. Identify the nucleotide below as either guanine (G) or
cytosine (C), and defend your answer USING SCIENTIFIC
VOCAB.
8. Write the missing nucleotide sequence, and explain how
you know which nucleotides belong there.
A C T G C T G C A T AG C T T A C T G C G C T C
T GA CGA CG T A T
A CG CGAG