| A | B |
|---|
| biology | the study of life |
| organization | the high degree of order within an organism's internal and external parts and in its interactions with the living world |
| cell | in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm |
| unicellular | describes an organism that consists of a single cell |
| multicellular | describes a tissue, organ, or organism that is made of many cells |
| organ | a collection of tissues that carry out a specialized function of the body |
| tissue | a collection of specialized cells and cell products that perform a specific function |
| organelle | one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function |
| biological molecule | chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions |
| homeostasis | stable internal conditions of the body |
| metabolism | the sum of all chemical processes that occur in an organism |
| cell division | the formation of two cells from one exisiting cell |
| development | the gene directed process by which an organism matures |
| reproduction | the process of producing offspring |
| gene | a short segment of DNA that contains the instructions for a single trait |
