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TLS Online TPP Program

#Question id: 1739

Cross-linking of B-cell surface receptors:

#XL - Q Biochemistry

  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: 15251

#XL - S Microbiology

The alga Dunaliella viridis tolerates high concentrations of
TLS Online TPP Program

#Question id: 553

#XL - R Botany

The concept of “induced fit” refers to the fact that:
TLS Online TPP Program

#Question id: 4446

#XL - R Botany

Transcription start site is designated with the;
TLS Online TPP Program

#Question id: 17284

#XL - R Botany

Which kind of plant tissue should lack phragmoplasts? 
TLS Online TPP Program

#Question id: 2173

#XL - S Microbiology

Which of the four classes of ATP-powered pumps share overall similarity: several subunits, the same general organization, and a similar function as H+ transporters?