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24 Cards in this Set
- Front
- Back
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Unit & structure for life |
Cell |
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All cellular functions that work together to make a cell (energy & material acquisitions) |
metabolism |
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Simplest organisms? What are they? |
Kingdom Monera; Prokaryotic (single-celled organism) |
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What are eukaryotic? |
Protista (cannot be classified as any of the others), Fungi, Plantae, Animalia |
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First principle of science |
Causality -- everything has a natural cause (thunder isn't made by zeus) |
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2nd principle of science |
Time & space: Same natural underlying causes are what happened in past & will happen in the future |
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3rd principle of science |
Common perception: Each person that tries something should get same results if held true. Anything I see you should see |
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Scientific Method |
(1) Observation: collect & organize info (2) Hypothesis: can be true or false, must be testable (3) experimentation: must be a control group & be able to do multiple tests (4) reevaluation (5) conclusion .. if true turns into theory |
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Ecology (2 steps) |
interrelationships between organisms & their environment |
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Population |
All members of ONE PARTICULAR species |
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Community |
different interrelated populations sharing the same habitat (interactions with different species) |
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Biotic Vs. Abiotic |
Components of habitat: Biotic (life- it's alive) abiotic (sun, water, temperature)- HAVE TO ADAPT TO ABIOTIC CONDITIONS FIRST |
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Autotrophs |
Self-feeders; create glucose |
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Heterotrophs |
Have to eat autotrophs to get glucose, we cannot make it from scratch |
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Primary Heterotroph |
Herbivore - eats plants |
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Secondary heterotroph |
Carnivore; eats primary to get glucose |
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Tertiary heterotroph |
animal eats animal that eats herbivore (i.e. snail eats plant, ate by fish, ate by shark) |
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Omnivore |
Eats both plants & animals |
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Detritus feeders |
Bottom feeders; can take in waste material |
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What are trophic levels? |
A level of energy storage (first level: autotrophs, 2nd: primary consumers, 3rd or higher: carnivore) |
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Can any ecosystem have an unlimited amount of trophic levels? |
No, glucose is limited & gets used |
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Rule of ten |
maximum amount of energy ever transferred is 10%; 90% wasted by heat of metabolism |
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Ecological pyramids |
Plant generates 100 cal, herbivores get 10 cal, carnivore gets 1 cal; takes more to feed fewer) |
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2 kinds of molecules on planet |
Water soluble (safer, organism & environment can break it down) & fat soluble (doesn't break down well) -- EX: DBT -- killed off birds - takes more to feed less -- resulted in bioaccumulation |
