TLS Online TPP Program

#Question id: 8964


Phylogenetic trees are best described as

#Unit 9. Diversity of Life Forms
  1. true and inerrant statements about evolutionary relationships.
  2. hypothetical portrayals of evolutionary relationships.
  3. the most accurate representations possible of genetic relationships among taxa.
  4. theories of evolution.
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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: 15451

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent, B-cell activation require many signals except___

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: 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: 15448

#Unit 4. Cell Communication and Cell Signaling

Stimulation of a single B cell would result in the generation of a clone of cells having_____

TLS Online TPP Program

#Question id: 15447

#Unit 4. Cell Communication and Cell Signaling

During development two types of B-cells will be formed:- 
I) T1 cell
II) T2 cell
Some features about T1 and T2 cells given in below;
a) Maturity achieve
b) Found in blood circulation
c) Presence of  Immunoglobulin IgM high and IgD low
d) Expressing CD21 and CD23
e) Cell expressing BAFF-R, Which bind with BAFF survival factor
Match the cell with their correct features;