TLS Online TPP Program

#Question id: 37852


Why do callus cultures need to be subcultured every 3–5 weeks?

#Plant Biotechnology
  1. To induce differentiation
  2. To prevent contamination
  3. To replenish nutrients and prevent medium drying
  4. To change the pH of the medium
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TLS Online TPP Program

#Question id: 40473

#Botany

Match the Algae in List-I with their Common Names in List-II.

List-I (Algae)List-II (Common Name)
A. BatrachospermumI. Water Net
B. HydrodictyonII. Frog Spawn Alga
C. UlvaIII. Umbrella Plant
D. AcetabulariaIV. Sea Lettuce

TLS Online TPP Program

#Question id: 40474

#Applied Microbiology

Which molecule is constitutively expressed on the surface of professional Antigen-Presenting Cells (APCs) to present antigenic peptides to CD4+ T cells?

TLS Online TPP Program

#Question id: 40475

#Applied Microbiology

Which of the following cells is considered the most potent professional antigen-presenting cell, capable of activating naive T cells?

TLS Online TPP Program

#Question id: 40476

#Applied Microbiology

Basophils, which are not antigen-presenting cells, are primarily known for releasing which inflammatory mediator?

TLS Online TPP Program

#Question id: 40477

#Applied Microbiology

Read the following statements regarding immune cells and select the correct option.

Statement I: All nucleated cells in the body can act as professional antigen-presenting cells

Statement II: B cells internalize antigens via receptor-mediated endocytosis and present them to Helper T cells.

TLS Online TPP Program

#Question id: 40478

#Applied Microbiology

Consider the following statements about Macrophages:

  1. They are phagocytic cells.

  2. They express MHC Class II molecules on their surface.

  3. They are classified as granulocytes like Basophils.

    Which of the statements given above are correct?