Grade 11 Gene Regulation Worksheet
Explore the mechanisms of gene regulation in prokaryotes and eukaryotes, including operons, transcription factors, and epigenetic modifications.
Includes
Standards
Gene Regulation
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following best describes the function of an operon in prokaryotes?
To regulate DNA replication.
To control the expression of a group of related genes.
To synthesize proteins directly.
To repair damaged DNA.
2. In the lac operon, what molecule acts as an inducer?
Glucose
Lactose
Tryptophan
Repressor protein
3. In eukaryotes, gene expression can be regulated at multiple levels, including transcriptional, post-transcriptional, translational, and levels.
4. The addition of methyl groups to DNA, known as DNA , generally leads to gene silencing.
5. Small non-coding RNA molecules, such as , can regulate gene expression by targeting mRNA for degradation or inhibiting translation.
6. Eukaryotic gene regulation is generally simpler than prokaryotic gene regulation.
True
False
7. Histone acetylation typically leads to a more open chromatin structure and increased gene expression.
True
False
8. Describe the role of transcription factors in eukaryotic gene regulation.
9. Explain the difference between positive and negative control in gene regulation.
Match each term on the left with its description on the right.
10. Promoter
a. Binds to an operator to block transcription
11. Operator
b. DNA sequence where RNA polymerase binds
12. Repressor
c. DNA segment that controls access of RNA polymerase to the genes