A train travelling at 54km/hr completely crosses another train having half its length and travelling in opposite direction in 18km/hr in 30 second. It also passes a railway platform in 40 seconds. The length of the platform (in meters) is

#Question id: 4518

#Unit 3. Fundamental Processes

The sequence of transcriptional activation events at a typical Pol II promote

I- Mediator facilitates the binding of TBP (or TFIID) and TFIIB, and the other basal transcription factors and Pol II then bind.

II- Activators bind the DNA.

III-The activators recruit the histone modification/nucleosome remodeling complexes and a coactivator such as Media.

IV- Phosphorylation of the carboxyl-terminal domain (CTD) of Pol II leads to transcription initiation.

#Question id: 4519

#Unit 3. Fundamental Processes

Some steroid hormone receptors function in the nucleus as transcription activators, stimulating the transcription of certain genes when a particular steroid hormone signal is present. When the hormone is absent, the receptor proteins revert to a repressor conformation, preventing the formation of PICs. It is an example of;

#Question id: 4520

#Unit 3. Fundamental Processes

Interaction of two regulatory proteins is often mediated by domains containing

#Question id: 4521

#Unit 3. Fundamental Processes

Three distinct types of structural domains used in activation by transcription activators, except one

#Question id: 4522

#Unit 3. Fundamental Processes

Gal4p contains a

#Question id: 4524

#Unit 3. Fundamental Processes

Sp1 is a transcription activator for a large number of genes in higher eukaryotes. Its DNA-binding site, choose incorrect statement