Chapter 9:
Chemistry of the Gene
Practice Test
1.
Use the
table
to answer this question. What amino acid does the codon AAA code for?
a.
phenylalanine
b.
cysteine
c.
leucine
d.
serine
Hint
2.
What group of nitrogen bases do adenine and guanine belong to?
a.
purines
b.
riboses
c.
pyrimidines
d.
deoxyriboses
Hint
3.
Proteins are made up of ____ kinds of amino acids.
a.
20
b.
10
c.
30
d.
4
Hint
4.
What is a set of three bases in a row that act as a code for a particular amino acid?
a.
helix
b.
codon
c.
polypeptide
d.
nucleotide
Hint
5.
What is one sequence of nucleotides along a DNA molecule?
a.
a protein
b.
a gene
c.
a blueprint
d.
a clone
Hint
6.
In the DNA molecule, the nitrogen base guanine can only bond with what other nitrogen base?
a.
adenine
b.
cytosine
c.
purine
d.
thymine
Hint
7.
Use the
table
to anser this question. What does the codon ATT code for?
a.
start
b.
tyrosine
c.
cysteine
d.
stop
Hint
8.
How many double-stranded DNA molecules are formed when DNA replication is complete?
a.
one
b.
two
c.
four
d.
three
Hint
9.
Before a cell divides, it produces an exact copy of its DNA in the process of _________.
a.
relocation
b.
replication
c.
translation
d.
duplication
Hint
10.
Use the
table
to answer this question. What amino acid does the codon GTC code for?
a.
glycine
b.
glutamine
c.
arginine
d.
serine
Hint
