366: In the eye donation, which part of the eye is transplanted from the donor ?
(a) Cornea
(b) Lens
(c) Retina
(d) The whole eye
367: Mitochondrial DNA in an individual comes from
(a) Male parent
(b) Female parent
(c) Both parents
(d) Neither of the parents
368: The sun derives its energy from:
(a) Nuclear fission reactions.
(b) Nuclear fusion reactions.
(c) Oxidation of helium.
(d) Fission of noble metals.
369: A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups mentioned below and readily available in the hospital will be safe for transfusion ?
(a) O, Rh-
(b) O, Rh+
(c) AB, Rh-
(d) AB, Rh+
370: The half-life of a radio active element is 5 years. The fraction of the radioactive substance that remains after 20 years is
(a) 1/2
(b) 1/4
(c) 1/8
(d) 1/16