Think, Solve, and Learn למדת 0 מתוך 32

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You transfer wildtype E.coli from plates containing lactose to plates containing both glucose and lactose. Under these conditions indicate what sequence of events will occur at the lac operon promoter.

(20 נק') - שאלה #57574

In the context of prokaryotic gene regulation, an operator is the:

(20 נק') - שאלה #57575

TBP, the TATA Binding Protein:

(20 נק') - שאלה #57576

(USMLoid) The VHL gene is often mutated in people suffering from von Hippel-Lindau (VHL) disease. The VHL protein is found in a ubiquitin-ligase complex that targets the transcription factor Hypoxia Inducible Factor 1 (HIF-1). In VHL patients HIF-1 is not targeted for destruction by the ubiquitination pathway. Which of the following genes will most likely show increased gene expression as a result?

(20 נק') - שאלה #57577

(USMLoid) A researcher has identified a gene of unknown function by linkage analysis in an extended family showing early onset Alzheimer dementia. While characterising the regulation of this gene in a transgenic cell-culture system the researcher has focussed on a 860 bp sequence located 2,412 bp before the start of transcription. When it is removed, expression of the gene decreases 30-fold. When it is put back in either orientation, the expression is restored. Which of the following best defines this sequence?

(20 נק') - שאלה #57578
 

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