MCQ
Cancer can be caused by the use of
- ✓Tobacco
- BAlcohol
- COpium
- D$LSD$
(a) Benzpyrene present in tobacco smoke is carcinogenic. About $95\%$ victims of lung cancer are due to smoking. Revers smoking cause oral cancer. Bidi smoking cause cancer of tongue, Pharynx, larynx, tonsils and esophagus. Tobacco chewing leads to oral cancer.
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$I.$ Recombinant $DNA$ technology popularly known as genetic engineering is a stream of biotechnology which deals with the manipulation of genetic material by man in vitro
$II. pBR322$ is the first artificial cloning vector developed in $1977$ by Boliver and Rodriquez from $E$. coli plasmid
$III.$ Restriction enzymes belong to a class of enzymes called nucleases
Which of the statements given above are correct?
Reason : Progesterone level decreases.