Answers

2014-06-19T15:44:24+05:30
the smallest group of atoms which has the overall symmetry of a crystal, and from which the entire lattice can be built up by repetition in three dimensions IS CALLED A UNIT CELL
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2014-06-19T15:57:45+05:30
A cell is a tiny mass of protoplasm which is surrounded by a membrane and is capable of performing all functions of life
it is the  structural and fundamental unit of living organisms.

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