A. 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