Gene expression
Presentation
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Science
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9th Grade
•
Practice Problem
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Medium
+4
Standards-aligned
Jocelyn Lewis
Used 3+ times
FREE Resource
14 Slides • 15 Questions
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Open Ended
How might environmental factors influence gene expression in multicellular organisms?
4
Multiple Choice
Why is understanding gene regulation and expression important for studying living organisms?
It helps explain how traits are inherited and expressed.
It is only relevant to plants.
It has no impact on health or disease.
It is not related to evolution.
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6
Multiple Choice
Which of the following best describes the role of DNA-binding proteins in prokaryotes?
They regulate genes by controlling transcription.
They synthesize new DNA strands.
They break down lactose in the cell.
They transport RNA out of the nucleus.
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9
Multiple Choice
Which regions are located in front of the operon's three genes and what are their functions?
Promoter and operator; promoter binds RNA polymerase, operator binds repressor
Operator and enhancer; operator binds RNA polymerase, enhancer binds repressor
Promoter and enhancer; promoter binds repressor, enhancer binds RNA polymerase
Operator and silencer; operator binds RNA polymerase, silencer binds repressor
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11
Multiple Choice
When the lac repressor binds to the operator region, what is the immediate effect on transcription of the lac genes?
Transcription is blocked because RNA polymerase cannot reach the genes.
Transcription is increased due to enhanced RNA polymerase binding.
The lac genes are duplicated.
The operator region is deleted.
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Open Ended
Explain how the lac operon is regulated in the presence and absence of lactose.
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Fill in the Blanks
A typical eukaryotic gene has a
Type answer...
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Multiple Choice
Which region of the DNA do transcription factors bind to in order to regulate gene expression?
Enhancer
Exon
Intron
Promoter
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Open Ended
Explain how the regulation of gene expression contributes to the development of specialized cell types in multicellular organisms.
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Multiple Select
Which of the following statements about homeotic genes is/are correct?
Homeotic genes regulate organ development.
Homeobox genes code for transcription factors.
Hox genes determine the identities of each body segment.
Homeotic genes are only found in fruit flies.
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Fill in the Blanks
Environmental conditions can affect gene expression and influence genetically determined traits. The phenotype of an organism is only partly determined by its
Type answer...
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Open Ended
Describe how epigenetic mechanisms can influence gene activity throughout an organism’s life cycle.
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Open Ended
How does gene expression affect development?
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Open Ended
Reflecting on today's lesson, what aspect of gene regulation or expression would you like to learn more about or found most interesting?
29
Multiple Choice
How does the environment influence gene expression in multicellular organisms?
By changing the DNA sequence
By affecting epigenetic markers
By altering the number of chromosomes
By preventing cell division
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