TLS Online TPP Program

#Question id: 30099


The major control of de novo pyrimidine nucleotide synthesis in man is:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. feedback inhibition of aspartate transcarbamylase.
  2. availability of N-acetyl glutamate.
  3. substrate availability.
  4. competitive inhibition of carbamoyl phosphate synthetase II.
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TLS Online TPP Program

#Question id: 19069

#Unit 6. System Physiology – Plant

Pathogenesis included except__

TLS Online TPP Program

#Question id: 28629

#Unit 2. Cellular Organization

Cln3-CDK complexes phosphorylate and inactivate which of the protein ?

TLS Online TPP Program

#Question id: 29514

#Unit 6. System Physiology – Plant

DIBOA & DIMBOA are 

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: 4585

#Unit 11. Evolution and Behavior

The cow Bos primigenius (which is bred for meat and milk) has a smaller brain and larger eyes than closely related wild species of ungulates. These traits most likely arose by ________.