TLS Online TPP Program

#Question id: 14504


If the probability of a defective bolt is 0.1, the mean and standard deviation for the distribution of defective bolts in a total of 500 are

#Unit 13. Methods in Biology
  1. 50, 6.7
  2. 40, 7.3
  3. 20, 3.1
  4. none of these
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TLS Online TPP Program

#Question id: 15449

#Unit 4. Cell Communication and Cell Signaling

Class switch recombination of B-cell that is generated upon recognition of protein antigens and requires the participation of_____

TLS Online TPP Program

#Question id: 15450

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent response requires a signal is provided by an activated T cell, which binds to the B cell through,
a) lipopolysaccharide moiety
b) its antigen receptor 
c) A separate interaction between CD40L on the B cell and CD40 (CD154) on the activated TH cell
d) A separate interaction between CD40 on the B cell and CD40L (CD154) on the activated TH cell

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)