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Q.91 Which ONE of the following is NOT a characteristic of a cancer cell?(A) Increase in cell motility (B) Loss of contact inhibition(C) Decrease in apoptosis (D) Uncontrolled meiosis The […]

Q.90 Increase in the existent population of grey peppered moth, Biston betularia, during industrialrevolution in Britain is an example of which ONE of the following evolutionary processes?(A) Neutral selection (B) […]

Q.89 Tay–Sachs disease is a human genetic disorder that is associated with defects in whichONE of the following cellular organelles?(A) Endoplasmic reticulum (B) Mitochondria(C) Golgi apparatus (D) Lysosome Tay-Sachs disease […]

Q.88 In a chemical reaction where the substrate and product are in equilibrium in solution, whatwill occur if an enzyme is added?(A) The equilibrium of the reaction will not change.(B) […]

Q.87 A zoologist recovered some tissue from preserved skin of a woolly mammoth. Furthergenetic analysis requires DNA isolation and increasing its amount. Which ONE of thefollowing techniques would be most […]

Q.86 Animals belonging to phylum Echinodermata are closer to chordates than otherinvertebrate phyla. Which ONE of the following reasons can account for this relatedness?(A) Highly evolved nervous system (B) Radially […]

Q.85 The following stoichiometric equation represents the conversion of glucose to lactic acid in a cell. Glucose + 2Pi + 2ADP → 2Lactic acid + 2ATP + 2H2O (-7000 cal) […]

Q.84 The initial concentration of cells (N0) growing unrestricted in culture is 1.0×106 cells/ml. The time required for the concentration to become 10.0×106 cells/ml is ____ h (up to two […]

Q.83 A continuous cell culture being carried out in a stirred tank reactor is described in terms of S. The cell mass concentration of the X substrate in the sterile […]

Q.82  Active transport involves the movement of a biomolecule against a concentration gradientacross the cell membrane using metabolic energy. If the extracellular concentration of abiomolecule is 0.005M and its intracellular […]