BIOL 111 Lecture Notes - Cellular Respiration, Germ Theory Of Disease, Energy Transformation

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What is life:
Bio Logos
Life Reason
Atom cell tissue organism population community ecosystem
1. Energy transformation - Metabolism
ATP cellular respiration
Light, inorganics (H2, H2S), organics (carbs, lipids)
2. Reproduction
asexual no gamete union, little to no genetic difference
sexual gamete union, genetic differences between parents and spawn
3. Homeostasis
adaptations enable to life to respond to changes in environment
Diversity of life
- Evolution drives diversity in life
- All life has common ancestry
- study of living things
- descended from single-celled ancestor 3.8 billion years ago
- share many characteristics:
- made of cells containing genes
- use genes to reproduce and evolve
- convert enviro molecs into new bio molecs for energy
- homeostasis
1. Living organisms consist of cells
- unicellular: one cell
- multicellular: more specialized cells for diff functions
- Zaccharias/Hans Janssen = microscope (1590) discovery of cells
- Leeuwenhoek: pond water has unicellular organisms
- Hooke: plant tissues = repeated units, cells
- Schleiden/Schwann (1838) cell theory:
- Cells basis of structural/physiological units of organisms
- Cells are both distinct things and building blocks for complex shit
- self-assembled life through non-living components
- Pasteur disproved spontaneous generation
- germ theory, explained fermentation by bacteria, pasteurization
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