BIOL 2520 Study Guide - Comprehensive Final Guide: Protozoa, Rcc1, Syncytium
1 Dec 2016
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Document Summary
Cells are the smallest unit of life. The cell: a self contained membrane-bound unit which carries out the functions of life; organized, autonomous, and internally regulated. Cells are dynamic- capable of movement: they can change shape. Cells respond to stimuli: need to be aware if nutrients are available, or if there are dangers (ex. Cells self regulate: autonomy, need to know when it is the appropriate time to perform activities (apoptosis, feeding, etc. ) In humans, over 200 different types of cells, yet all arose from a single cell. Inter-relations of cells: relating to its own cell. Intra-relations of cells: relating with other cells. How cells respond to their environment: when subjected to certain stressors. Their ability to grow and change they are what makes up you and the food you eat. The study of cells started with the development of microscopes. Robers hooke (1665: described cells in cork (empty, dead cells) Anton van leeuwenhowk (1665-1675: first to describe living cells.
