Gene transcriptions/Promoters/Quiz

Gene promoters is a lecture and part of the gene transcription series.

1: RNA Polymerase, 2: Repressor, 3: Promoter, 4: Operator, 5: Lactose, 6: lacZ, 7: lacY, 8: lacA. Top: The lactase gene is essentially turned off. There is no lactose to inhibit the repressor, so the repressor binds to the operator, which obstructs the RNA polymerase from binding to the promoter and making lactase. Bottom: The gene is turned on. Lactose is inhibiting the repressor, allowing the RNA polymerase to bind with the promoter and express the genes, which synthesize lactase. Eventually, the lactase will digest all of the lactose, until there is none to bind to the repressor. The repressor will then bind to the operator, stopping the manufacture of lactase. Credit: T A RAJU.

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Quiz edit


1 Complete the text:

A proof-of-concept structure, including a control group, consists of

, procedures, findings, and


2 True or False, The purpose of a treatment group with respect to gene promoters is to describe natural processes or phenomena for the first time relative to a control group.


3 Complete the text:

A short or

realization of a certain

or idea to

a treament's feasibility for gene promoters is called a proof of


4 True or False, A pure gene promoter involves no doing apart from itself.


5 Several promoter elements have been previously identified in eukaryotes, but those cannot account for transcription from most RNA polymerase II-transcribed

6 True or False, A gene promoter is located in the distal promoter.


7 Which of the following is not a transcriptional characteristic of a gene promoter?

located between nucleotides -8 and +2 relative to the transcriptional start site (+1)
in eukaryotes
TATA-less genes
a consensus sequence

8 True or False, A control group may be used in gene promoters to demonstrate no effect or a standard effect versus a novel effort applied to a treatment group.


9 Which of the following are phenomena associated with a gene promoter?

transcription of A1BG
directs activator-dependent but TFIID-independent transcription
TATA box-less promoters
initiator element
mediator dependence
core promoter
RNA polymerase II holoenzyme

10 True or False, The gene promoter is found in the promoter regions of about 1% of human genes.


11 Evidence that demonstrates that a model or idea versus a control group is feasible for a gene promoter is called a


12 True or False, A dominant group associated with a gene promoter differs from a control group in that it rules the treatment of the control group.


Hypotheses edit

  1. The promoter for A1BG may be as many as 1,000 nucleotides.

See also edit

External links edit

{{Anthropology resources}}

{{Medicine resources}}{{Phosphate biochemistry}}