Biotechnology And Its Applications Question 1
Question: Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
(1) Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
(2) Recombinant DNA Technology
(3) Serum and Urine analysis
(4) Polymerase Chain Reaction (PCR) technique
Show Answer
Answer: (3) Serum and Urine analysis
Explaination-
ELISA- Antigen-antibody reaction. Detecting the presence of antigens in the patient serum or by detecting the antibodies produced against the pathogen.
PCR- Amplification of the nucleic acid in the pathogen allowing us to detect the pathogen at very low concentration. Detect HIV in suspected AIDS patients
RDT- Joining together of DNA molecules from two different species that are inserted into a host organism to produce new genetic combinations
Serum and Urine analysis- Early detection of disease is not possible as the markers for most diseases appear late
