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TLS Online TPP Program

#Question id: 26397

Which f the following statement is incorrect

#Unit 3. Fundamental Processes

  1. Hence Cdc6 and Cdt1 are the key licensing factors and helicase loading proteins

  2. Cdc6 has an ATPase activity that is required for it to support initiation

  3. Cdc6 do not have ATPase activity and having no role in the initiation

  4. The presence of Cdc6 and Cdt1 at the yeast origin allows the MCM proteins to bind to the complex in G1 in the inactive state
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TLS Online TPP Program

#Question id: 20331

#Unit 4. Cell Communication and Cell Signaling

LuxR is analogous to certain eukaryotic regulatory proteins, such as
TLS Online TPP Program

#Question id: 20332

#Unit 4. Cell Communication and Cell Signaling

What is LuxR and LuxI?
TLS Online TPP Program

#Question id: 20333

#Unit 4. Cell Communication and Cell Signaling

Choose true statements about Ax21-mediated quorum sensing;
a. It is a highly conserved sulfated peptide secreted by Xanthomonas oryzae.
b. Ax21 is sulfated by RaxST, which is a putative tyrosine sulfotransferase.
c. Sulfated Ax21 is secreted via the RaxABC type I secretion system
d. Sulfated Ax21 secreted is recognized by the rice XA21 receptor.
TLS Online TPP Program

#Question id: 20334

#Unit 4. Cell Communication and Cell Signaling

Sulfotransferases are the first enzymes of the core sulfation pathways, they transfer sulfate from PAPS to the hydroxyl or amino group of a wide variety of acceptors, as given below
a. Molecular basis of symbiotic host specificity in Rhizobium meliloti: nodH and nodPQ genes encode the sulfation of lipochito-oligosaccharide signals
b. Sulfation of the choriogonadotropin alpha subunit in human placental explants
c. Tyrosine sulfation of the amino terminus of CCR5 facilitates HIV-1 entry
d. A tyrosine-sulfated peptide based on the N terminus of CCR5 interacts with a CD4-enhanced epitope of the HIV-1 gp120 envelope glycoprotein and inhibits HIV-1 entry.
e. The Xanthomonas oryzae pv. oryzae raxP and raxQ genes encode an ATP sulfurylase and APS kinase that are required for AvrXa21 avirulence.
Which one of the following combination of above statements is correct?
TLS Online TPP Program

#Question id: 20335

#Unit 4. Cell Communication and Cell Signaling

Quorum sensing-mediates the social cooperation and conflict both-
TLS Online TPP Program

#Question id: 20336

#Unit 12. Applied Biology

Granule bound starch synthase I (GBSS l) is the main enzyme of amylose biosynthesis. Therefore ___________ activity of GBSS I is expected to increase the amylose content of starch