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TLS Online TPP Program

#Question id: 10285

Some of the statements given shows the activity of PFK-1 and PFK-2, which of the following statements incorrectly shown these enzyme activity?

#Unit 6. System Physiology – Plant
  1. Fructose 2,6-bisphosphate is formed by phosphorylation of fructose 6-phosphate, catalyzed by phosphofructokinase-2 (PFK-2), and is broken down by fructose 2,6-bisphosphatase (FBPase-2)
  2. fructose 2,6-bisphosphate is an allosteric activator of PFK-1 activity
  3. PFK-1 is virtually inactive in the absence of fructose2,6-bisphosphate, fructose 2,6-bisphosphate has the opposite effect on FBPase-1: it reduces its affinity for its substrate, thereby slowing gluconeogenesis

  4. cAMP-dependent protein kinase, which transfers a phosphoryl group from ATP to the bifunctional protein PFK-1/FBPase-1. Phosphorylation of this protein enhances its FBPase-1 activity and inhibits its PFK-1 activity

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TLS Online TPP Program

#Question id: 1005

#Unit 1. Molecules and their Interaction Relevant to Biology

The first step in the de novo biosynthesis of IMP is a reaction between glutamine and PRPP. Which statement is not true about this reaction?
TLS Online TPP Program

#Question id: 31310

#Unit 3. Fundamental Processes

The lentiviral expression vectors are particularly useful for introducing synthetic genes for the expression of
TLS Online TPP Program

#Question id: 12767

#Unit 10. Ecological Principles

Your friend comes to you with a problem. It seems his shrimp boats aren’t catching nearly as much shrimp as they used to. He can’t understand why because originally he caught all the shrimp he could handle. Each year he added a  new  boat,  and  for  a  long  time  each  boat  caught  tons  of  shrimp.  As  he  added  more  boats,  there  came  a  time when each boat caught somewhat fewer shrimp, and now, each boat is catching a lot less shrimp. Which of the following topics might help your friend understand the source of his problem?
TLS Online TPP Program

#Question id: 28327

#Unit 5. Developmental Biology

During the formation of Amphibian mesoderm, Inward movement of an expanding outer layer so that it spreads over the internal surface of the remaining external cells, this process of movement of outer layer is called as____
TLS Online TPP Program

#Question id: 32710

#Unit 1. Molecules and their Interaction Relevant to Biology

The relationship between activation energy and the rate constant of the reaction, k, is given by the