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TLS Online TPP Program

#Question id: 23581

Which of the following is false?

#Unit 13. Methods in Biology
  1. Blunt end fragments of DNA can be ligated.
  2. A sheared DNA fragment can be given sticky ends.
  3. The enzyme deoxynucleotidyl transferase cannot generate sticky ends.
  4. A synthetic DNA fragment, called a linker, can connect blunt end DNA fragments.

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TLS Online TPP Program

#Question id: 15451

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent, B-cell activation require many signals except___
TLS Online TPP Program

#Question id: 15452

#Unit 4. Cell Communication and Cell Signaling

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?
TLS Online TPP Program

#Question id: 15453

#Unit 4. Cell Communication and Cell Signaling

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

#Question id: 15454

#Unit 4. Cell Communication and Cell Signaling

B cells migrate to the lymphoid follicles, they are directed by chemokine interaction_________, which is secreted by follicular dendritic cells (FDCs)
TLS Online TPP Program

#Question id: 15455

#Unit 4. Cell Communication and Cell Signaling

Variable region of antibody containing sequence motif DGYW/WRCH, which are responsible for mutation, where R, W, H represented as____
TLS Online TPP Program

#Question id: 15456

#Unit 4. Cell Communication and Cell Signaling

IL-5 Class Switch IgM into