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MODEL PAPER 4 — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMODEL PAPER 43 Marks
Question
The image below describes the molecular diagnostic procedures.
Image
i. Write any two biochemical/molecular diagnostic procedures for early detection of viral infection.
ii. Explain the principle of any one of them.
✓

Answer

→ Name of biochemical/molecular diagnostic tests for viruses:
- ELISA - Enzyme-Linked Immunosorbent Assay
- PCR - Polymerase Chain Reaction
→ Principle of ELISA - It is based on antigen-antibody interaction. Infection by a pathogen can be detected by the presence of antigens or by detecting the antibodies synthesized against the pathogen.

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