Quiz

1. Lesson Quiz
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Name Class Date
Lesson Quiz
14.1 RNA
Directions
For multiple choice questions, write the letter that best answers the question or completes the
statement on the line provided. For other question types, follow the directions provided.
1. For each missing word or phrase, circle the choice that correctly completes the
sentence.
In the process of (translation / replication / differentiation / transcription),
DNA is used as a template for making another type of nucleic acid called (ATP /
pyruvate / RNA / NADPH). The process begins when the enzyme
(RNA polymerase / DNA replicase / ATP synthase / catalase) binds to a
region called the (repressor / operator / promoter / anticodon).
2. Write a term from the box to identify the different types of RNA and sections of
RNA.
mRNA rRNA tRNA introns exons
a. ___________ Carries copies of the instructions for assembling proteins:
b. ___________ Makes up the subunits of ribosomes
c. ____________ Carries amino acids and matches them to the coded message
for assembling proteins
d. ____________ Sections of an mRNA molecule that are removed
e. ____________ Sections of an mRNA molecule that are not removed, and are
joined together to form the completed molecule

2. Lesson Quiz
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Name Class Date
_______ 3. The diagram shows the process in which pre-mRNA is changed into mRNA.
Which events are described in the diagram?
a. Introns are removed, and remaining exons are spliced together.
b. Exons are removed, and remaining introns are spliced together.
c. Introns and exons are removed, and remaining DNA is spliced together.
d. Introns are removed, condensed, and then combined again.
_______ 4. In which ways is RNA different from DNA? Select three properties that apply to
RNA, but not DNA.
a. generally single-stranded
b. contains thymine
c. contains uracil
d. contains the sugar ribose
e. contains the sugar deoxyribose
_______ 5. Which of these events occurs first during the process of transcription?
a. RNA polymerase joins nucleotides into the RNA molecule.
b. RNA polymerase binds to the promoter.
c. Introns are removed from the RNA molecule.

3. Lesson Quiz
3
Name Class Date
d. Exons are removed from the RNA molecule.
_______ 6. George is studying a computer model of a DNA molecule, in which the letters
A, C, G, and T are listed in a very long sequence. The model includes a total of
2000 genes that are scattered along the full length of the molecule. The genes
make up only a small fraction of the molecule.
George wants to identify the locations of the genes. Which would be the MOST
USEFUL first step to follow?
a. Divide the model molecule into 2000 segments of equal size.
b. Identify all of the start codons in the model molecule.
c. Identify the promoter regions in the model molecule.
d. Divide the model molecule into three-letter pieces.