Ths general biology unit 1 our environment living relationships notes_v1516
Unit 1 Notes:
How do different living
things depend on one
(1) Energy & Matter Cycling
• Sources of energy and matter must transform and transfer throughout an
• 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.
• An ecosystem is a specific environment with a unique group of living (biotic)
and nonliving (abiotic) factors.
• Examples of Biotic Factors:
• Examples of Abiotic Factors:
(3) Types of Organisms
Organisms that can produce their
own food from an unusable form
(like sunlight or inorganic compounds).
Organisms that cannot make their
own food, and need to eat other
living things for energy.
(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.
(5) What we know of Plants & Animals so far:
• Give off Carbon Dioxide gas in the dark and light.
• Take in Oxygen gas in the dark and light.
• 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.