Question

Why small size cells are metabolically active?

Answer 1

The larger a cell gets, the more difficult it is for nutrients and gases to move in and out of the cell. As a cellgrows, its volume increases more quickly than its surface area. ... Large,metabolically active cells often have lots of cell protrusions, resulting in many folds throughout the membrane.

Answer 2

The smaller cells are more efficient and active metabolically because of
●higher nuclear cytoplasmic ratio
●higher surface area volume ratio.

The higher nuclear cytoplasmic ratio allows the nucleus to have better control on metabolic activities. Whereas, the higher surface area volume ratio allows quicker exchange of materials between the cell and its surrounding.