The Cell Theory states that: 1) All organisms are made up of one or more cells and the products of those cells. 2) All cells carry out life activities (require energy, grow, have a limited size). 3) New cells arise only from other living cells by the process of cell division.tructure-a bilipid membraneous layer composed of proteins and carbohydrates. It is fluid like. Function-the cell membrane separates the cell from its external environment, and is selectively permeable (controls what gets in and out).
The anatomy and structure of the five sense organs of the human body: vision, hearing, smell, taste, and touch.
Special Senses of the Cat. The pictures in this section are reprinted with permission by the copyright owner, Hill's Pet Nutrition, from the Atlas of Veterinary Clinical Anatomy. These illustrations should not be downloaded, printed or copied except for personal, non-commercial use. The organs of special senses allow the animal to interact with its environment; sight, taste, smell and hearing.