Cell- The basic unit of structure and function of living things.
Cell membrane- A thin flexible barrier that surrounds a cell and controls which substances pass into and out of a cell
Cell wall- A rigid layer that surrounds the cells and living things and protects them.
Organelle- A tiny cell structure that carries out a specific function with the cell.
Tissue- any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.
Organ- a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
Unicellular (of protozoans, certain algae and spores, etc.) consisting of a single cell
multicellular-(of an organism or part) having or consisting of many cells.
Autotroph- an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide
Heterotroph- an organism deriving its nutritional requirements from complex organic substances.
Prokaryotic- A prokaryote is a single-celled organism that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelles.
- A eukaryote is any organism whose cells contain a nucleus and other organelles enclosed within membranes. Eukaryotes belong to the taxon Eukarya or Eukaryota.