The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
The semipermeable membrane surrounding the cytoplasm of a cell.
A rigid layer of Polysaccharides lying outside the plasma membrane of the cells of plants, Fungi, and bacteria.
Any of a number of organized or specialized structures within a living cell.
Any of the distinct types of material which animals or plants are made, consisting of specialized cells and their products.
A part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
Consisting of a single cell.
Having or consisting of many cells.
An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
And organism deriving its nutritional requirements from complex organic substances.
A single-celled organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelles.
Any organism whose cells contain a nucleus and other organelles enclosed within membranes.