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TLS Online TPP Program

#Question id: 24327

What is the major roles of Tight junctions in animal cells?

#Unit 4. Cell Communication and Cell Signaling
  1. seal off body cavities and restrict diffusion of membrane components.
  2. function as transmembrane linkers (integrators) between the extracellular matrix and the actin cytoskeleton. 
  3. permit the passage of molecules as large as 1.2 nm in diameter.
  4. functions as a tension cable that can internally brace the cell and thereby control its shape.

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TLS Online TPP Program

#Question id: 24225

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect option
TLS Online TPP Program

#Question id: 27061

#Unit 1. Molecules and their Interaction Relevant to Biology

According to the Fischer projection which of the following is correct regarding the given fig.
TLS Online TPP Program

#Question id: 10725

#Unit 10. Ecological Principles

While studying the diversity of 3 communities, 5 species and 50 individuals were recorded from each community. The number of individuals under each species was listed as mentioned in the following Table.  


Which of the following is decreasing order of evenness of community?
TLS Online TPP Program

#Question id: 11571

#Unit 7. System Physiology – Animal

Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?
TLS Online TPP Program

#Question id: 160

#Unit 1. Molecules and their Interaction Relevant to Biology

Of the 20 standard amino acids, only ___________ is not optically active.  The reason is that its side chain ___________.