BIOLOGY 2F03 Chapter Notes - Chapter 7: C3 Carbon Fixation, Photosynthetically Active Radiation, C4 Carbon Fixation
11 Oct 2016
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E used by diff organisms are in the form of: light, organic molecules, inorganic molecules. Nutrients: (raw materials) acquired from env. to build organic/inorganic compounds. Organisms use one of three main sources of e: solar radiation 2) organic molecules 3) inorganic molecules. Since studying specific taxa can(cid:859)t help understand ecological interactions, organisms can be grouped based on functional similarities among species ex)the way that organisms gain energy- by their trophic (feeding) biology. Autotrophs- organisms that use inorganic sources of both carbon & e: types of autotrophs, photosynthetic. Use co2 as source of carbon & solar radiation in the form of light as source of e. Ex) plants, photosynthetic protists, photosynthetic bacteria (these taxa have independent evolutionary histories, but same means of acquiring e: chemosynthetic. Use inorganic molecules as a source of c and e. Heterotrophs ((cid:862)other-feeders(cid:863))- organisms that use organic molecules as source of c & e: ex) bacteria, fungi, protists, animals, parasitic plants.
