a) (Cell – cell organelles) = cytosol
b) (Cytosol + cytogel) = protoplasm
c) (Cell – nucleus) = cytosol
d) (Cytoplasm- cytosol) = cell organelles
Equations a and d are correct.
Explanation: Cytosol comprises the liquid part of the cell.
Protoplasm is cytoplasm + nucleoplasm, and is the living component of the cell. It includes the cell membrane, but not the cell wall. If all cell organelles are removed from the cell, then the remaining liquid is known as cytosol. Remember, removal of cell organelles will remove the nucleus and nucleoplasm also.