Scaffolds for MAP kinase pathways are well documented in yeast, fly, and worm cells, but their presence in mammalian cells has been difficult to demonstrate. Perhaps the best documented scaffold protein in metazoans is Ksr (kinase suppressor of Ras).

A. Ksr functions as a molecular scaffold by binding several signaling components of the MAP kinase cascade, including both MEK and MAP kinase; and thus can enhance MAP kinase activation by regulating the efficiency of these interactions.

B. Ksr function as a protein kinase which constitutive activate RTK signalling pathway.

C. Ksr function as a receptor proteins which inhibits RTK signalling pathway.

D. Ksr function as a protein phosphatase which inhibits RTK signalling pathway.

Which of the following statement is correct about Ksr?

TLS Online TPP Program

#Question id: 52

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect option regarding Isomerism.

TLS Online TPP Program

#Question id: 15252

#Unit 2. Cellular Organization

A process in which a suspension of microbes is quickly frozen at temperatures ranging from - 54°C to -72°C, and the water is removed by a high vacuum (sublimation) 

TLS Online TPP Program

#Question id: 20324

#Unit 4. Cell Communication and Cell Signaling

What is the main difference between Gram positive and Gram-negative quorum sensing mechanism?

TLS Online TPP Program

#Question id: 15775

#Unit 5. Developmental Biology

When a multipotent stem cell divides asymmetrically, its maturing daughter cell often goes through a transition stage, called as

A. Progenitor cell .

B. Transit-amplifying cell.

C. Adult stem cell

D. Totipotent precursor cell

TLS Online TPP Program

#Question id: 4904

#Unit 8. Inheritance Biology

Which one of the following statements is INCORRECT regards cytoplasmic inheritance?