GeneralBiologyOnline
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General ---------Biology----------------------------------------------------- ------------------Online---------------- |
Terms
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(critical terms in bold) |
| biology: the scientific study of life | DNA molecule is a double helix |
| "levels" of biologic organization: atom, molecule, cell... | DNA's code is spelled with 4 nucleotides: A, T, G, C |
| evolution (microevolution) | DNA's code spells out "genes" |
| reductionism | each gene makes a specific protein molecule |
| cell theory:cells as basic unit of structure and function in life | humans have about 20,000 genes |
| atom, molecule, | "genome:" your genome is "all your genes" |
| organelle, cell, tissue, organ, organism | cells are "systems of chemical reactions" |
| DNA inheritance molecule, "continuity of life" | regulation is by positive and negative feedback |
| virus, prokaryotic cells and eukaryotic cells | Domains: bacteria, archaea, eukarya |
| Charles Darwin (1809-1882) | cellular unity underlies biological diversity |
| prokaryotic cells (bacteria) & eukaryotic cells (plants, animals) | scientific method: hypothesis based inquiry |
| animation: size compared, prokaryotes, eukaryotes, viruses | science & technology |
| egg, sperm, fertilization | DNA technology: medicine, agriculture, crime scene... |
| DNA directs "development:"egg, embryo, fetus, child, adult |
General Biology Online!
Copyright © 1999 by Bill Wilcox
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