151. The first land vertebrates were
(A) dipnoi
(B) amphibia
(C) reptilia
(D) aves

152. All life on planet earth is powered by
(A) solar energy
(B) thermal energy
(C) tidal energy
(D) kinetic energy

153. Recombinant DNA is introduced in to host cell by means of
(A) phage
(B) vector
(C) bacteria
(D) enzyme

154. In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of
(A) sodium ion
(B) carbon dioxide
(C) chloride ion
(D) potassium ion

155. Which gene is located on linkage group number 11 in man
(A) sickle cell anemia
(B) leukemia
(C) albinism
(D) all of these

 

156. In birds the sex is determined by the type of
(A) sperm
(B) autosomes
(C) egg
(D) none of these

 

157. In RNA nucleotides are attached by
(A) peptide bonds
(B) hydrogen bonds
(C) covalent bond
(D) phosphodiester bond

158. The chromosome is
(A) gene
(B) genes + protein
(C) DNA + genes
(D) gene + protein

159. The human body contains water
(A) 60-80%
(B) 70-90%
(C) 75-95%
(D) 80-90%

160. Environment is a source of
(A) food
(B) shelter
(C) clothing
(D) all of these

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