
Gene Regulation and Expression 24
Flashcard
•
Science
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the role of lactase in E. Coli?
Back
Lactase is an enzyme that E. Coli uses to digest lactose.
2.
FLASHCARD QUESTION
Front
Define gene expression.
Back
Gene expression is the process by which the instructions in DNA are converted into a functional product, typically a protein.
3.
FLASHCARD QUESTION
Front
What happens to the lac operon when lactose is present but glucose is absent?
Back
The lac operon is activated, leading to the production of lactase.
4.
FLASHCARD QUESTION
Front
What is the function of a repressor in gene regulation?
Back
A repressor inhibits gene expression by slowing down transcription.
5.
FLASHCARD QUESTION
Front
Which cells in an organism share the same DNA sequence?
Back
All cells in an organism, except for red blood cells, contain the same DNA sequence.
6.
FLASHCARD QUESTION
Front
What is the lac operon?
Back
The lac operon is a set of genes in E. Coli that are involved in the metabolism of lactose.
7.
FLASHCARD QUESTION
Front
How does glucose affect the lac operon?
Back
When glucose is present, the lac operon is repressed, preventing the production of lactase.
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