There are two classes of release factors for translation termination. Choose correct statements

A. Class I release factors recognize the stop codons and trigger hydrolysis of the peptide chain from the tRNA in the P-site.

B. Prokaryotes have two class I release factors called RF1 and RF2. RF1 recognizes the stop codon UGA, UAA and RF2 recognizes the stop codon UAG and UAA.

C. In eukaryotic cells, there is a single class I release factor called eRF1 that recognizes all three stop codons.

D. Class II release factors stimulate the dissociation of the ribosome after release of the polypeptide chain.

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 ?

TLS Online TPP Program

#Question id: 14888

#Unit 4. Cell Communication and Cell Signaling

Given below are some cytokines and stimulated cell lines ;

Which one of the following is the correct match between the Interleukines and cell lines ?

TLS Online TPP Program

#Question id: 14889

#Unit 4. Cell Communication and Cell Signaling

If we provide  the Ikaros signals to the HSCs cell  is converted into

TLS Online TPP Program

#Question id: 14890

#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 granulocyte- macrophage colony stimulating factor (GM-CSF)

A) Granulocyte colony stimulating factor ( G-CSF )and 

B) Macrophage colony- stimulating factor (M-CSF) are formed;

i) Natural killer cells

ii) Monocytes

iii) Granulocytes

iv) Neutrophills

Find out the correct combination of these macrophages;