The statement 'Cell arises from pre-existing cell' (Omnis cellula-e cellula) was proposed by:

$(a)$ List any two structural differences and two similarities between a plant cell and an animal cell.
$(b)$ What would happen if an animal cell is kept in distilled water for $24$ hours?

Differentiate between diffusion and osmosis. Write any two examples where a living organism uses osmosis to absorb water.

Which cell organelle is known as the 'kitchen of the cell'?

Functional segments of $DNA$ are called

Expand the following:
$(i)$ $RER$
$(ii)$ $SER$
$(iii)$ $DNA$
$(iv)$ $RNA$
$(v)$ $ATP$
$(vi)$ $SPM$