GENERAL HISTOLOGY

Detailed explanation-1: -The plasma membrane is the border between the interior and exterior of a cell. As such, it controls passage of various molecules-including sugars, amino acids, ions, and water-into and out of the cell.

Detailed explanation-2: -Plasma membrane-controls what enters and leaves the cell (also present in eukaryotic cells)

Detailed explanation-3: -Hydrophobic substances, such as oxygen and steroid hormones, can freely pass through the cell membrane. Polar molecules, such as water and glucose, can also pass through the cell membrane but with a lower permeability coefficient. Ions, on the other hand, cannot pass through the plasma membrane unaided.

Detailed explanation-4: -Carbon dioxide and oxygen cannot pass through the cuticle, but move in and out of leaves through openings called stomata (stoma = “hole"). Guard cells control the opening and closing of stomata. When stomata are open to allow gases to cross the leaf surface, the plant loses water vapor to the atmosphere.

Detailed explanation-5: -The plasma membrane is the outer lining of the cell. It separates the cell from its environment and allows materials to enter and leave the cell. Ribosomes. Ribosomes are organelles that process the cell’s genetic instructions to create proteins.