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Kerala PSC General Science Book Study Materials Page 486
Book's First PageA. Theory of Mutation 1. Beadk and Tatuum B. Theory of Evolution 2. Jacob and Monod C. One gene one enzyme hypothesis 3. Darwin D. Operon concept 4. De Vries Codes: A B C D (a) 3 4 1 2 (b) 4 3 1 2 (c) 4 3 2 1 (d) 3 4 2 1 Ans: (b) 170. The human heart is (a) Neurogenic heart (b) Myogenic heart (c) Pulsating heart (d) Ampullary heart Ans: (b) 171. The genetic code DNA is carried from the nucleus to Ribosome by (a) t-RNA (b) r-RNA (c) S-DNA (d) ATP Ans: (b) 172. Veins carry blood (a) towards the heart (b) away from the heart (c) both to and from the heart (d) only around the heart Ans: (a) 173. The theory of "jumping genes" was propounded by (a) Gregor John Mendel (b) Thomas Hunt Morgan (c) Barbara McClintock (d) Watson and Crick Ans: (c) 174. Match the following: List-I List-II (Diseases) (Types of disease) A. Haemophilia 1. Deficiency disease B. Diabetes 2. Genetic Disease C. Rickets 3. Hormonal disorder D. Ringworm 4. Fungal infection Codes: A B C D (a) 2 3 4 1 (b) 2 3 1 4 (c) 3 2 1 4 (d) 3 2 4 1 Ans: (b) 175. The waste product In the urine of man is (a) urea (b) uric acid (c) ammonia (d) non-nitrogenous Ans: (a) 176. Nephrons are found inside (a) Liver (b) Lung (c) Brain (d) Kidneys Ans: (d) 485