Description : The smallest viable unit which can grow, multiply and form a plant in tissue culture is
Last Answer : The smallest viable unit which can grow, multiply and form a plant in tissue culture is A. Ceromosome B. Nucleus C. Cell D. Tissue
Description : In Ames’ assay, addition of a carcinogen to the culture medium allows S. typhimurium to grow (A) In the presence of histidine (B) In the presence of arginine (C) In the absence of histidine (D) In the absence of arginine
Last Answer : Answer : C
Description : One of the reasons Koch was able to show the cause of disease was that he could grow them a. in a pure culture b. in an animal host c. in a tissue culture d. in chicken eggs
Last Answer : a. in a pure culture
Description : $ The phenomenon of soil-less culture of plants is called Hydroponics. ! Donnan equilibrium is due to fixed ions in the cells
Last Answer : $ The phenomenon of soil-less culture of plants is called Hydroponics. ! Donnan equilibrium is due to fixed ... wrong D. If both As and R are wrong.
Description : What does a culture medium provide to living cells?
Last Answer : The medium will supply all the nutrients that the cell will need to grow well.
Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae
Last Answer : Ans. ((a))
Description : Which one of the following is a case of wrong matching? (a) Somatic – Fusion of two hybridization diverse cells (b) Vector DNA – Site for tRNA synthesis (c) Micropropagation – In vitro production of plants in large numbers (d) Callus – Unorganised mass of cells produced in tissue culture
Last Answer : (b) Vector DNA – Site for tRNA synthesis
Description : In cloning of cattle a fertilized egg is taken out of the mother's womb and (a) in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the ... d) the egg is divided into 4 pairs of cells which are implanted into the womb of other cows.
Last Answer : (a) in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows
Description : A bacterium divides every 35 minutes. If a culture containing 105 cells per mL is grown for 175 minutes, what will be the cell concentration per mL after 175 minutes? (a) 35 × 105 cells (b) 32 × 105 cells (c) 175 × 105 cells (d) 85 × 105 cells
Last Answer : b) 32 × 105 cells
Last Answer : (b) 32 × 105 cells
Description : In the secondary culture, cells are obtained from a. primary culture b. the organism c. organ culture d. phenotypic culture
Last Answer : a. primary culture
Description : 9. Which one of the following is a case of wrong matching ? (1) Callus - Unorganised mass of cells produced in tissue culture (2) Somatic hybridization - Fusion of two diverse cells (3) Vector DNA - Site for t-RNA synthesis (4) Micropropagation - In vitro production of plants in large number
Last Answer : Vector DNA - Site for t-RNA synthesis