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Human Health and Disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
  1. What is the functional difference between B-cells and T cells
  2. Name the source used to produce hepatitis B vaccine using rDNA technology.
✓

Answer

  1.  
B-cells
T-cells
They produce antibodies, that form part of humoral immunity.
They stimulate B-cells to produce antibodies and they constitute the cell-mediated immunity.
They are not involved in rejecting organ transplants.
They are responsible for rejecting organ transplants.
  1. Yeast cells.

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