Which of the
following is not the postulate of cell theory?
a) cell is the structural and functional unit of living things
b) all organisms are made up of cell
c) all cells consist of cell wall and
nucleus
d) new cells arise from pre-existing cells
Techniques Used In Cell Biology
Cell fractioning is the combination of various methods, used to separate a cell organelles and components upon……..
a) size
b) shape
c) density
d) both a and c
In differential centrifugation, the content which settles in the bottom of the tube called……and those remaining suspended in the form of liquid are……
a) pallet-supernatant
b) supernatant-pallet
c) pallet-filtrate
d) filtrate-supernatant
In differential staining ……..will stain nucleus and ……will stain cytoplasm.
a) litmus-eosin
b) eosin-litmus
c) haematoxylin-eosin
d) haematoxylin-litmus
Growth of a cell or a tissue on chemically defined nutrient medium under sterile conditions is called ……..
a) cloning
b) tissue culture
c) hybridization
d) crossing
