41. The bacterial pili mainly contain
a. Carbohydrates
b. Lipids
c. Proteins
d. Minerals
42. The wonder drug of second world war is produced by
a. Algae
b. Fungi
c. Bacteria
d. Plants
43. Role of bacteria in carbon cycle is
a. Photosynthesis
b. Chemosynthesis
c. Breakdown of organic compounds
d. Assimilation of nitrogen compounds
44. Centromere is that part of chromosome where
a. Nucleoli are formed
b. Crossing over takes places
c. Chromatids are attached
d. Naking occurs
45. Somatic cell of the adult body are haploid in many except
a. Vertebrates
b. Invertebrates
c. Fungi
d. Vascular plants
46. Congential diseases are
a. Diseases present at birth
b. Deficiency disease
c. Occur during life
d. Spread from one individual to another
47. The enzyme needed in biological systems for joining two molecules is called
a. Lyases
b. Diastases
c. Polymerases
d. Hydrolase
48. Meosomes are the part of
a. Plasma membrane
b. ER
c. Lysosomes
d. Golgi
49. All prokaryotes are surrounded by a cell wall except
a. Mycoplasms
b. Sperochetes
c. Actinomycetes
d. Methanogena
50. Enzyme hydrolyzing bacterial cell wall
a. Lysozome
b. Reductase
c. Protease
d. Lysozyme
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