In the 16th century, sailors who travelled long distances had diseases related to malnutrition, because they
were not able to eat fresh vegetables and fruits for months at a time. Scurvy is a result of deficiency of
(A) carbohydrates (B) proteins (C) Vitamin C (D) Vitamin D
Blood clotting involves the conversion of
(A) prothrombin to thromboplastin (B) thromboplastin to prothrombin
(C) fibrinogen to fibrin (D) fibrin to fibrinogen
During meiosis there is
(A) one round of DNA replication and one division (B) two rounds of DNA replication and one division
(C) two rounds of DNA replication and two division (D) one round of DNA replication and two division
If parents have free ear lobes and the offspring has attached ear lobes, then the parents must be
(A) homozygous (B) heterozygous (C) co-dominant (D) nullizygous
When chlorine gas is passed through an aqueous solution of KBr, the solution turns orange brown due to the
formation of
(A) KCl (B) HCl (C) HBr (D) Br2