Ch. 1B
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14 terms
Terms | Definitions |
|---|---|
 Robert Hooke (1665) | Saw cells. |
| Antoni Van Leeuwenhoek (1665-1675) | Saw first living oragnisms called "animalcules". |
| Schleiden (1838)-plants composed of cells Schwann (1839)-animals made up of cells Rudolf Virchow (1855)-"biogenesis"-living things are preceeded by other living things | Cell Theory |
| Extracellular matrix | A dense material often made of protein fibers embedded in a polysaccharide gel. |
| Eucaryote | An organism whose cells have a nucleus. |
| Procaryote | An organism whose cells don't have a nucleus. |
| Most procaryotes live as single celled organisms, although some join together to form chains, clusters, or other organized multicellular structures. | ... |
| Mitochondria | organelles that generate energy for the eucaryotic cell-thought to have evolved from aerobic bacteria that took to living inside the anaerobic ancetors of today's eucaryotes. |
| Other living things depend on the organic compounds that procaryotic cells generate from inorganic materials. | ... |
| Procaryotes can be photosynthetic while others can be aerobic. | ... |
| Chloroplasts | Organelles in the plant cell that perform photosynthesis-thought to have evolved from photosynthetic bacteria that took to living inside the plant cells cytoplasm. |
| Cell Theory Principles (3) | All organisms are composed of cells. Cells are basic structural and functional units of life. Cells arise only by division of pre-existing cells. |
| Characteristics of Cells | Composed of cells Highly organized Use energy for growth and repair Display homeostasis Grow and develop -increase in size -cell differentiation/division Reproduce (asexual/sexual) Adapt to environment |
| Characteristics of Viruses | Non-living lack metabolism/self-replication Obligatory intracellular parasites DNA/RNA surrounded by protein coat |
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