GENERAL HISTOLOGY

Detailed explanation-1: -The rough endoplasmic reticulum is continuous with the nuclear envelope, and looks like a series of canals near the nucleus. Proteins made in the rough endoplasmic reticulum as destined to either be a part of a membrane, or to be secreted from the cell membrane out of the cell.

Detailed explanation-2: -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-3: -The part of a cell that provides structural support and protection is the Cell wall. A cell wall is a firm and rigid structure that surrounds the cell membrane. Many different types of cells have a cell wall, including plants, fungi, bacteria, and archaea. Animal cells and most protists have no cell walls.

Detailed explanation-4: -The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Detailed explanation-5: -The plasma membrane controls the passage of materials into and out of the cell through its transport functions.