GENERAL HISTOLOGY

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

Detailed explanation-2: -Cell Membrane protects the cell and its organelles while as a gatekeeper by playing the following roles: It provides the structural support to the cell. It also behaves semi permeable in nature which means that it only allows selected molecules to pass through it like water, oxygen, and carbon dioxide.

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.