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TLS Online TPP Program

#Question id: 10169

Which of the following is not the effect of C3 and C4 cycle in hot and dry climates ?

#Unit 6. System Physiology – Plant
  1. elevated temperatures limit the rate of photosynthetic CO2 assimilation in C3 plants by decreasing the solubility of CO2
  2. In C4 plants warm climates decrease the levels of CO2, but the low concentrations of cytosolic HCO3 − saturate PEP Case because the affinity of the enzyme for its substrate is sufficiently high
  3. The optimal photosynthetic efficiency of C3 species generally occurs at temperatures lower than for C4 species
  4. C4 species become less abundant in the tropics and subtropics and more abundant when latitudes depart from the equator
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TLS Online TPP Program

#Question id: 16776

#Unit 13. Methods in Biology

If the Mean and Mode are 25, then find the Median.
TLS Online TPP Program

#Question id: 23529

#General Aptitude

Exponential growth occurs when there is
TLS Online TPP Program

#Question id: 15690

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement for the matrix 
TLS Online TPP Program

#Question id: 1256

#Unit 4. Cell Communication and Cell Signaling

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: 3021

#Unit 2. Cellular Organization

The lag phase of the bacterial growth curve is marked by