During eukaryotic protein synthesis, stress conditions result in activation of specific kinases leading to phosphorylation of a key translation initiation factor that inhibits protein synthesis from a large number of cellular mRNA. Which one of the following factors is the kinase?

TLS Online TPP Program

#Question id: 14882

#Unit 4. Cell Communication and Cell Signaling

In bone marrow, stem cells are committed to different lineages. Factors that stimulate colonies of these different lineages are interleukin-3 (multi-CSF), IL-7,  granulocyte- macrophage colony stimulating factor (GM-CSF) and granulocyte or macrophage colony- stimulating factor (G-CSF or M-CSF). In a mouse deficient in IL-7 the number of which cells will not be altered

TLS Online TPP Program

#Question id: 14883

#Unit 4. Cell Communication and Cell Signaling

Where is double negative selection is found during T-cell formation?

TLS Online TPP Program

#Question id: 14884

#Unit 4. Cell Communication and Cell Signaling

Which types of cell shows the middle affinity towards the self proteins? 

TLS Online TPP Program

#Question id: 14885

#Unit 4. Cell Communication and Cell Signaling

Mature T cell is found in thymus in

TLS Online TPP Program

#Question id: 14886

#Unit 4. Cell Communication and Cell Signaling

Secondary lymphoid organ provide sites where lymphocytes encounter antigen, become activated, and undergo clonal expansion and differentiation into effector cells, include

a) spleen

b) lymph node

c) mucosa-associated lymphoid tissue

Which of the following are the effector cells of secondary lymphoid organ?

TLS Online TPP Program

#Question id: 14887

#Unit 4. Cell Communication and Cell Signaling

Secondary lymphoid organ are typically compartmentalized into T-cell areas and B-cell areas, these cells activity are separated  into distinct microenvironments such as

a) T cells are found in the paracortex of the lymph nodes

b) B cells are organized into follicles cells

c) B cells are found in the periarteriolar sheath of the spleen.

d) T cells are found in the periarteriolar sheath of the spleen.

Which of the following is the correct microenvironments of the cells ?