How are prokaryotic genes regulated?

Gene Regulation and Expression

Passage
•
Biology
•
10th Grade
•
Hard
Jason Anderson
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using homeotic genes
Through the TATA box
By the organization of genes into operons
By environmental factors
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when lactose is not present in the medium for the lac operon?
RNA polymerase begins transcription
Regulatory proteins bind to DNA and block transcription
Lactose diffuses into the cell
The lac genes are activated
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key feature of a typical eukaryotic gene?
It contains a TATA box
It has a promoter and an operator
It is regulated by lactose
It is organized into operons
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do transcription factors play in eukaryotic cells?
They control the expression of genes by binding DNA sequences in regulatory regions
They bind to the O region to block transcription
They regulate genes by controlling transcription in prokaryotes
They attach to lactose to change its shape
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do environmental factors influence gene regulation?
Through the use of homeotic, homeobox, and Hox genes
By changing the shape of repressor proteins
They can affect gene regulation
By affecting the organization of genes into operons
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