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Ths general biology unit 1 our environment living relationships notes_v1516


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Living Relationships

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Ths general biology unit 1 our environment living relationships notes_v1516

  1. 1. Biology Unit 1 Notes: Living Relationships
  2. 2. Big Question How do different living things depend on one another?
  3. 3. (1) Energy & Matter Cycling • Sources of energy and matter must transform and transfer throughout an Ecosystem: • Transform  To change form so that it can be used by that organism. • Transfer  Move from one organism to another. • All living things rely on others for sources of energy and matter. • Only 10% of total energy within each source is transferred to the next. • Each time one organism eats another, they take in the matter it was made of, and get energy from the bonds of those molecules.
  4. 4. (2) Ecosystem • An ecosystem is a specific environment with a unique group of living (biotic) and nonliving (abiotic) factors. • Examples of Biotic Factors: • Plants • Animals • Bacteria • Examples of Abiotic Factors: • Water • Sunlight • Minerals
  5. 5. (3) Types of Organisms • Autotrophs: Organisms that can produce their own food from an unusable form (like sunlight or inorganic compounds). • Heterotrophs: Organisms that cannot make their own food, and need to eat other living things for energy.
  6. 6. (4) Types of Heterotrophs • Herbivore: A heterotroph whose diet is primarily plant-based. • Carnivore: A heterotroph whose diet is primarily animal-based. • Omnivore: A heterotroph whose diet is a balance of plant and animal matter. • Detritivore: A heterotroph whose diet is deceased-animal-based. • Decomposer: A heterotroph who eats deceased animals, and then completes special processes to release their chemical matter back into the ecosystem.
  7. 7. (5) What we know of Plants & Animals so far: • Animals: • Give off Carbon Dioxide gas in the dark and light. • Take in Oxygen gas in the dark and light. • Plants: • Take in Carbon Dioxide, and give off Oxygen gas in the light. • Take in Oxygen, and give off Carbon Dioxide gas in the dark. • Plants & Animals rely one another for the gases each produces.
  8. 8. O2 O2CO2 CO2
  9. 9. Now we want to think about… How do plants and animals produce the matter/energy each needs to survive?