New Chapter 1.1
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| biology |
the study of living things |
| organization |
hierarchy-the combination of simple structures to produce more complex structures |
| cell |
the basic unit of living things |
| unicellular |
organisms such as bacteria are composed of one cell |
| multicellular |
organisms such as humans are composed of many cells |
| organs |
groups of tissues make these |
| tissues |
groups of cells make these |
| organelle |
a small, specialized unit inside a cell |
| biological molecules |
RNA, DNA, proteins, carbohydrates, lipids |
| homeostasis |
maintenance of constant and stable internal conditions |
| metabolism |
the production of energy through the process of making and breaking down molecules |
| cell division |
the multiplication of cells through processes such as mitosis |
| development |
the process by which an organism becomes a mature adult |
| reproduction |
when organisms make more of their own kind |
| gene |
a short segment of DNA that contains instructions for the dvelopment of a single trait of an organism |
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