GENERAL HISTOLOGY

Detailed explanation-1: -Animal cells are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles. Unlike the eukaryotic cells of plants and fungi, animal cells do not have a cell wall.

Detailed explanation-2: -The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell. Cell walls are found in both prokaryotes and eukaryotes, although not all cells have cell walls.

Detailed explanation-3: -Algae, fungi, and plant cells have a cell wall; animal cells and protozoans lack cell walls. The rigid, tightknit, polysaccharide molecular structure of the cell wall helps the cell resist osmotic lysis.

Detailed explanation-4: -In eukaryotes, vertebrates don’t have a cell wall but plants do. The cell walls of prokaryotes differ chemically from the eukaryotic cell walls of plant cells, which are primarily made of cellulose.

Detailed explanation-5: -Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.