Home › UPSC CSE › Science › Science & Technology › Very low concentrations of a virus can be detect…
Very low concentrations of a virus can be detected before symptoms by amplifying nucleic acid with:
AGene therapy
BPCR technique
CELISA test
DAutoradiography
Answer & Solution
Correct answer: B. PCR technique
1. Symptoms appear only when pathogen load is high.
2. Amplifying DNA finds it earlier.
3. That is PCR.
_Source: NCERT Class 12 Biology, Chapter 12, Biotechnology and its Applications._
Related questions
The second basic principle of preventing infectious disease, keeping the immune system worThe basic key to prevention of infectious diseases is:The recruitment of immune cells to infected tissue, causing swelling, pain and fever, is:The virus causing Japanese encephalitis, entering through a mosquito bite, infects the:Typhoid-causing bacteria entering through the mouth stay in the:Female mosquitoes bite because they need blood to:Animals like mosquitoes that carry infecting agents from a sick person to another host areAntibiotics do not work against viral infections because viruses: