Download Gene Expression PreTest

Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
Test Prep Pretest
In the space provided, write the letter of the term or phrase that best completes
each statement or best answers each question.
_____ 1. Gene regulation in eukaryotes causes
a. genes to be expressed differently depending on the cellular
environment.
b. genes to be expressed in every kind of environment.
c. genes to be expressed differently depending on the number of genes
that occur together.
d. None of the above.
_____ 2. What is the name of the proteins that regulate gene expression?
a. regulators
c. gene animators
b. transcription factors
d. promoters
_____ 3. The part of a protein that is chemically active is called
a. the active domain.
b. the subunit.
c. a regulatory protein.
d. RNA splicing.
_____ 4. In what kinds of cells do mutations occur that can be transmitted to
offspring?
a. body cells
c. reproductive cells
b. gametes
d. Both (b) and (c)
_____ 5. A mutation that can moves a gene to a new location is called a(n)
a. point mutation.
c. transposon.
b. insertion.
d. deletion.
_____ 6. Gene mutations that result in cancer often affect
a. genes that control blood clotting.
b. genes that affect tRNA and rRNA production.
c. genes that control cell growth and specialization.
d. Both (a) and (b)
_____ 7. Which of the following is not an example of large-scale genetic
change?
a. nondisjunction
c. crossover
b. polyploidy
d. point mutation
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Genes in Action
Name ______________________________ Class ___________________ Date __________________
Test Prep Pretest continued
Complete each statement by writing the correct term or phrase in the space
provided.
8. When lactose is absent, ______________________ __________________ can
bind to the promoter and transcription can occur in the lac operon.
9. The lac operon is switched off when a protein called a(n)
______________________ is bound to the operator.
10. In eukaryotic gene regulation, proteins called ______________________
______________________ help arrange RNA polymerases in the correct
position on the promoter.
11. In eukaryotes, long segments of nucleotides with no coding information are
called ______________________.
12. In eukaryotes, the portions of a gene that are actually translated into proteins
are called ______________________.
13. Insertions, deletions and point mutations are types of
______________________ mutations.
14. Duplications, deletions, inversions, and gene rearrangements are types of
______________________ mutations.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Genes in Action
Name ______________________________ Class ___________________ Date __________________
Test Prep Pretest continued
Read each question, and write your answer in the space provided.
15. Explain the difference between a nonsense mutation and a missense mutation.
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16. What happens when nondisjunction takes place during cell division?
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17. Describe what happens during apoptosis.
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18. What is the lac operon?
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19. Explain why gene regulation in eukaryotic cells is more complex than in
prokaryotic cells.
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
24
Genes in Action
Name ______________________________ Class ___________________ Date __________________
Test Prep Pretest continued
20. Describe the three ways that DNA mutation can alter genetic material.
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
25
Genes in Action