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Molecular Biology: Understanding MicroRNAs and Their Role in Gene Regulation, Quizzes of Cell Biology

Definitions and terms related to micrornas, their synthesis, and their function in gene regulation. Topics include the difference between cis and trans-acting elements, the role of rna polymerases, transcription factors, promoters and enhancers, and the mechanisms of gene regulation through transcription factors and epigenetic modifications. Students will also learn about the zinc finger motif, rna interference (rnai), and genomic imprinting.

What you will learn

  • Where is drosha found in the cell? What is the process called?
  • What are the differences between Cis and Trans-acting elements?
  • How do enhancers/activators affect transcription from a distance?
  • What is the function of RISC?
  • How does an insulator function?
  • Describe the zinc finger motif. What happens when it is absent?

Typology: Quizzes

2014/2015

Uploaded on 04/27/2015

pshcaitlinx3
pshcaitlinx3 🇺🇸

18 documents

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TERM 1
What are microRNAs?
DEFINITION 1
Differentiate between Cis and Trans-acting elements. Which
encode for transcription factors?
TERM 2
What does each RNA polymerase synthesize?
DEFINITION 2
Do all RNA poly's recognize the same promoter sequence?
TERM 3
Which RNA poly. also transcribes microRNA?
DEFINITION 3
What are promoters and enhancers? Give ex) of a promoter
sequence.What regulates/controls them?
TERM 4
What are two categories of transcription
factors? To what does each bind?
DEFINITION 4
What is basal transcription?
TERM 5
To what do transcriptional activators bind?
DEFINITION 5
How do enhancers/activators affect transcription from a
distance?
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What are microRNAs?

Differentiate between Cis and Trans-acting elements. Which

encode for transcription factors?

TERM 2

What does each RNA polymerase synthesize?

DEFINITION 2

Do all RNA poly's recognize the same promoter sequence?

TERM 3

Which RNA poly. also transcribes microRNA?

DEFINITION 3

What are promoters and enhancers? Give ex) of a promoter

sequence.What regulates/controls them?

TERM 4

What are two categories of transcription

factors? To what does each bind?

DEFINITION 4

What is basal transcription?

TERM 5

To what do transcriptional activators bind?

DEFINITION 5

How do enhancers/activators affect transcription from a

distance?

What is the function of activators?

How is the activity of enhancers limited?

TERM 7

How does an insulator function? (what

interaction does it stop/prevent?)

DEFINITION 7

Name 3 well understood DNA binding motifs found in

transcription factors

TERM 8

Describe the zinc finger motif. What happens

when it is absent?

DEFINITION 8

Describe the interactions between enhancers, activators and

steroid hormones

TERM 9

What is a repressor? How do they work?

DEFINITION 9

How are nucleosomes involved in gene regulation?

TERM 10

What is silencing? What causes it? What do

methyl groups interfere with?

DEFINITION 10

Are genes in heterochromatin transcribed?