Some of the human RNA pol II subunit and features are given, match them correctly

Subunit	Features
1. hRPB1	a. contains active sites, involved site selection maintain elongation β orthologs
2. hRPB2	b. contains DNA, Binds DNA Involved site selection, β' orthologs
3. hRPB3	c. may function as function with Rpb11 as ortholog of the alpha dimer of prokaryotic RNA polymerase

TLS Online TPP Program

#Question id: 31042

#Unit 4. Cell Communication and Cell Signaling

Monomeric Ras proteins are GTPase “switch” proteins. Ras activation is accelerated by: 

TLS Online TPP Program

#Question id: 31043

#Unit 4. Cell Communication and Cell Signaling

An SH2 domain is able to bind to a short target sequence of polypeptide that contains:

TLS Online TPP Program

#Question id: 31044

#Unit 4. Cell Communication and Cell Signaling

In which manner Ras is different from Gα proteins?

TLS Online TPP Program

#Question id: 31045

#Unit 4. Cell Communication and Cell Signaling

Ras proteins (RasD) contain a mutation at position 12. Replacement of the normal glycine 12 with any other amino acid-

TLS Online TPP Program

#Question id: 31046

#Unit 4. Cell Communication and Cell Signaling

Ras induces a kinase cascade that includes Raf, MEK, and MAP kinase. Which of the following is a dual-specificity protein kinase?

TLS Online TPP Program

#Question id: 31047

#Unit 4. Cell Communication and Cell Signaling

R7 photoreceptors develop normally in the developing eyes of Drosophila mutants that lack a functional Ras or Raf protein but express :