Answer: (TFIID) TBP-> TFIIB IIA--> TFIIF RNA POL II
Explanation:
Remember that in eukaryotic organisms, transcription and processing are coupled processes. There are 3 different types of Rna pol. In the case of RNA pol II transcribes genes that encode proteins (mRNA synthesis). Transcription factors are involved, for example: TFIID, TBPs, TAF (recognizes TATA promoter center, regulatory functions), TFIIA (stabilizes TBP union, antirepressant function), TFIIB (RNA Pol II starting point selection).
Some bacterial toxins cause disease by altering the activity of G protein, cholera toxin is one of them
Cholera toxin catalyse ADP ribosylation of Gs and blocks GTPase activity thus Gs GTP become permanently active
Constitutive activation of Gs protein continuously induce adenylyl cyclase, cytosolic cAMP level rises that leads to activation of protein kinase A (pKA)
Activated pKA catalyse phosphorylation of two transmembrane proteins of intestinal epithelial cells:
CFTR cause excessive outflow of Cl- ion and Na+ H+ exchange cause efflux of Na+ ion, both enters in gut and form Na+ Cl-
Na+Cl- leads to outflow of water from the gut, resulting in diarrhea and dehydration and this condition may cause death of organisms due to loss of water and ions
It is because the moss sporophyte have specialized pores which is called the "stomata." It also supports photosynthesis because it allows the carbon dioxide and oxygen between outside air and sporophyte inside.
Fires in grasslands prevent the growth of shrubs. Plants can survive in these fires because most of them have parts underground, where fire cannot reach. Animals and runners aren't affected by this, because they can leave.
