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.
External senses include the traditional five: sight, hearing, touch, smell and taste, as well as thermoception (temperature differences) and possibly an additional weak magnetoception (direction). Proprioceptive senses include nociception (pain); equilibrioception (balance); proprioception (a sense of the position and movement of the parts of one's own body).