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1.Describe and provide an example of gene regulation in eukaryotic organisms at the level of

a. Chromosome

b. Gene transcription

c. Posttranscriptional processing

d.Translation

e.Posttranslational processing

2. Explain the role that gene regulation plays in the formation of a multicellular organism with cells of different functions from a single cell.

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Sixta Kovacek
Sixta KovacekLv2
28 Sep 2019
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Name three different levels of gene regulation in a multicellular eukaryotic organism.

What is gene regulation at the chromatin level? Give one example of how it can be carried out.

Control elements are a form of gene regulation found at what level of gene regulation?

Are there forms of RNA that can block translation? If so give an example.

What do master regulatory genes have to do with control elements?

2. In eukaryotic cells, _________determine the amount of mRNA arising from a particular gene.

a. transcriptional-level controls

b. RNA processing-level controls

c. translational-level controls

d. replication-level controls

e. b and c

3. In eukaryotic cells, _________determine how a primary transcript is converted to mature mRNA

a. transcriptional-level controls

b. RNA processing-level controls

c. translational-level controls

d. replication-level controls

e. a and d

4. In eukaryotic cells, _________determine when a particular mRNA is actually used in protein synthesis.

a. transcriptional-level controls

b. RNA processing-level controls

c. translational-level controls

d. replication-level controls

e. None of the above because protein synthesis takes place immediately

5. Under what circumstances do cells selectively activate and suppress their genes?

a. at different stages of embryonic development

b. in different tissues

c. exposure to different types of stimuli

d. No such circumstances exist in nature—cells express all their genes throughout life.

e. a, b and c

6. Which statement about the control of gene expression is FALSE?

a. A single gene may be controlled by different transcription factors.

b. A single transcription factor may be necessary for the expression of different genes.

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e. Control of gene transcription is complex and influenced by various circumstances.

7. What is thought to maintain X chromosome inactivation in females?

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b) An intact functional organism can be obtained following transfer of a somatic cell nucleus into the cytoplasm of an enucleated egg.

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a) Differential gene expression in different cell types.

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