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TLS Online TPP Program

#Question id: 15452

During  activation of B-cell, T cell delivers cytokines and other signals to its partner B cell. Which types of cytokine signals secreted by T-cells?

#XL - S Microbiology
  1. IL-4 
  2. IL-1 and IL-3
  3. TLR-4
  4. IL-2 and IL-4
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TLS Online TPP Program

#Question id: 124

#XL - Q Biochemistry

What is the role of cholesterol in animal cell membranes?
TLS Online TPP Program

#Question id: 15453

#XL - S Microbiology

Activated B cells divide and differentiate into antibody-producing plasma cells, this process occurred in 
TLS Online TPP Program

#Question id: 19546

#XL - P Chemistry

Which of the following alkaline earth metal ions has the highest ionic mobility in aqua solution?
TLS Online TPP Program

#Question id: 18498

#XL - Q Biochemistry

Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.
TLS Online TPP Program

#Question id: 4945

#XL - T Zoology

Which is a defining characteristic that all protobionts had in common?