Practice Questions

TLS Online TPP Program

#Question id: 12915

Which of the following statement is not correct about PCR.

#Unit 13. Methods in Biology

It provides rapid means for DNA identification and analysis.
It helps in the investigation of cellular and molecular processes.
It is used to amplify a precise fragment of DNA.
It does not require the knowledge of DNA sequence.

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TLS Online TPP Program

#Question id: 14881

#Unit 4. Cell Communication and Cell Signaling

The paradigmatic adult stem cell niche, contains several cell types that coordinate HSC development, including in column I and column II

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

c) mucosa-associated lymphoid tissue

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