Physics
Radioactive elements can be traced out in living cell through a technique called

Chromatography
Centrifugation
Auto radiography
All listed here

ANSWER DOWNLOAD EXAMIANS APP

Physics
Holography is a technique of

Recording a permanent three dimensional photograph of a given single colour or a multicolour
Recording a permanent, sharp two diimensional black and white or multicolour photograph
Recording a permanent three dimensional black and white photograph
Recording a permanent three dimensional multicolour photograph

ANSWER DOWNLOAD EXAMIANS APP