Biotechnology

9. Hydrated synthetic seeds which are produced by ion exchange reaction involve mixing the somatic embryos in a solution of: (A) sodium alginate and dropping it in a solution of calcium nitrate (B) calcium alginate and dropping it in a solution of sodium nitrate (C) calcium alginate and dropping it in a solution of ammonium … Read more

10. Shoot organogenesis by tissue culture results into: (A) a bipolar structure that has no vascular connection with the explant (B) a monopolar structure that has a strong connection with the pre-existing vascular tissue of the explant (C) a monopolar structure that has no vascular connection with the explant (D) a bipolar structure that has … Read more

11. ‘Hairy roots’ induced in vitro by the infection of Agrobacterium rhizogenes are characterized by: (A) P and R only (B) P and Q only (C) Q and R only (D) R and S only Where: P. a high degree of lateral branching Q. genetic instability of culture R. an absence of geotropism S. poor … Read more

13. In N-linked glycosylation, the oligosaccharide chain is attached to protein by: (A) asparagine (B) arginine (C) serine (D) threonine

16. Wash out (as defined by D=max) of a continuous stirred tank fermenter is characterized by (X=biomass, S=substrate concentration in bioreactor, So=substrate concentration in feed, P=product concentration in bioreactor): (A) X = 0, S = 0, P = 0 (B) X = 0, S = So, P = 0 (C) X =0, S < 0, … Read more

17. The study of evolutionary relationships is known as: (A) genomics (B) proteomics (C) phylogenetics (D) genetics

18. The lipopolysaccharides present in bacterial cell wall has lipid A which is connected to: (A) O-polysaccharide (B) core polysaccharide (C) both with O-polysaccharide and core polysaccharide (D) rhamnose-mannose disaccharide

19. Molecular chaperones are a class of proteins that facilitate: (A) the proper folding of newly synthesized proteins (B) unfolding of newly synthesized proteins (C) degradation of newly synthesized proteins (D) targeting of newly synthesized proteins

1. Embryonic stem cells are derived from: (A) fertilized embryo (B) unfertilized embryo (C) sperm (D) kidney

20. Gas vacuoles are present in: (A) Anabaena flos-aquae (B) Bacillus subtilis (C) Acanthurus nigrofuscus (D) Mycobacterium tuberculosis