Using Key Terms
1.The making of RNA based on the sequence
of nucleotides in DNA is called 4B
a.DNA replication.c.transcription.
b.translation. d.gene regulation.
2.The making of proteins from the information
carried by mRNA is called 4B 9B
a.DNA replication.c.transcription.
b.translation. d.gene regulation.
3.A change in the genetic code is
called 6C
a.mutation. c.codon.
b.operon. d.operator.
4.Mutations that change one nucleotide in a
gene are called a(n) 6C
a.operon mutation.
b.codon mutation.
c.repressor protein.
d.point mutation.
5.For each set of terms, write one or more
sentences summarizing information
learned in this chapter.
a.codon and anticodon
b.mRNA, tRNA, and rRNA
c.promoter, operator, operon, and repressor
d.exon and intron
6.Anticodons are found on ______
molecules. 6A
a.mRNA c.rRNA
b.DNA d.tRNA
7.Unlike DNA, RNA contains 4A 6A
a.the sugar deoxyribose.
b.the nitrogen base uracil.
c.a phosphate group.
d.nucleotides.
8.A short chain of DNA has the nucleotide
sequence ATA CCG. Its complementary
mRNA nucleotide sequence is 6A
a.TAT GCC. c.TUT GCC.
b.UAU GCC. d.UAU GGC.9.The lacoperon allows a bacterium to build
the proteins needed for lactose metabolism
when 6B
a.glucose is present.
b.lactose is absent.
c.lactose is present.
d.glucose is absent.
10.Transcription of lactose-metabolizing genes
is blocked when the _____ is bound to the
operator. 6B
a.repressor c.inducer
b.operon d.enhancer
11.In eukaryotes, gene expression can be
regulated by 6B
a.mutations.
b.transcription factors.
c.repressors.
d.operons.
12.Does the drawing below represent a strand
of RNA or a strand of DNA? Explain your
answer. 6A- Compare the way trans-
posons and exons affect genes. 6A 6B - What type of transla-
tion error occurred in those individuals
who possessed a mutated Pax-9
gene? 6C - Concept Mapping Make a concept
map that shows the role of RNA in gene
expression. Try to include the following
words in your map: transcription, transla-
tion, mRNA, tRNA, rRNA, gene, promoter,
codons, anticodons, proteins, amino acids,
ribosome, and cytoplasm. 2C 3E
Performance
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222 CHAPTER 10Review
CHAPTER REVIEW
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