Grade 12 Gene Regulation Worksheet
This worksheet covers key concepts in gene regulation, including operons, epigenetics, and regulatory mechanisms in prokaryotes and eukaryotes.
Includes
Standards
Gene Regulation in Prokaryotes and Eukaryotes
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Read each question carefully and answer to the best of your ability. For multiple choice questions, circle the correct option. For fill-in-the-blank questions, complete the sentence with the appropriate term. For short answer questions, provide a concise and accurate response.
1. Which of the following best describes the function of an operon?
A unit of genes that are all regulated together.
A single gene that controls multiple traits.
A protein that binds to DNA to initiate transcription.
An enzyme responsible for DNA replication.
2. In prokaryotes, the lac operon is induced in the presence of:
Glucose
Lactose
Tryptophan
All of the above
3. The addition of methyl groups to DNA, which often silences gene expression, is known as .
4. In eukaryotic gene regulation, are DNA sequences that enhance the transcription of a gene.
5. All genes in a multicellular organism are expressed at all times.
True
False
6. Histone acetylation generally leads to a more open chromatin structure and increased gene expression.
True
False
7. Briefly explain the difference between positive and negative control in gene regulation.
8. Describe how alternative splicing contributes to gene regulation in eukaryotes.
Use the words below to complete the sentences.
9. A is a region of DNA that initiates transcription of a particular gene.
10. Proteins that bind to specific DNA sequences to regulate gene expression are called .