_________contains the largest quantity of extracellular materials.

Which statement is true about Mechanical and Chemical digestion –

i). In chemical digestion, food breaks down into simpler nutrients that can be used by the cells.

ii). In mechanical digestion, It starts in the mouth only, when food chewed.

iii). In chemical digestion, the chemical is used in breaking down the food, so that it can easily digest.

iv). in mechanical digestion, it requires physical breaking the food into smaller pieces.

Select the correct option for the Cell Membrane -

White blood cells are derived from which of the following:

Who among the following first discovered cell?