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TLS Online TPP Program

#Question id: 1739

Cross-linking of B-cell surface receptors:

#Unit 4. Cell Communication and Cell Signaling

  1. Is a characteristic feature of thymus-dependent antigens

  2. Lowers the intracellular Ca2+ concentration

  3. Rapidly phosphorylates the Ig-α and Ig-β chains of the surface Ig receptor

  4. Requires contiguity of two B-cell epitopes of different specificity on the same antigen molecule

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TLS Online TPP Program

#Question id: 4420

#Unit 3. Fundamental Processes

In yeast, galactose operon is switched on by the instantaneous presence to create activator complex as
TLS Online TPP Program

#Question id: 11358

#Unit 10. Ecological Principles

In Holling's functional responses of predators, what is the most fundamental difference between a Type I functional response versus Type II and Type III functional responses?
TLS Online TPP Program

#Question id: 10237

#Unit 10. Ecological Principles

Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?

 
TLS Online TPP Program

#Question id: 29526

#Unit 6. System Physiology – Plant

When plants recognize elicitors from insect saliva, then which of the following ion concentration increases 
TLS Online TPP Program

#Question id: 1077

#Unit 4. Cell Communication and Cell Signaling

Would ID50 and LD50 necessarily be the same for a given virus? Why or why not?