ANATOMY

Detailed explanation-1: -Cell membranes serve as barriers and gatekeepers.

Detailed explanation-2: -By acting as a gatekeeper, the plasma membrane protects the cell from its surroundings and keeps important molecules from leaving the cell, so that the correct balance of molecules is maintained.

Detailed explanation-3: -Protein machineries embedded in the membranes of our cells act as ‘gatekeepers’ controlling everything transported in and out of every cell in our bodies. Because these machineries, called membrane embedded proteins, are vital to the way our bodies function they are the target of at least 40% of drugs.

Detailed explanation-4: -Mitochondria are present in both animal and plant cells.

Detailed explanation-5: -The lysosomes are called as cellular house keepers and natural scavengers of the cell.