[BIO 203] - Final Exam Guide - Everything you need to know! (58 pages long)
1 Dec 2016
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Acquisitionn of nutrients is different among the major eukaryote lifestyles, though the need to maximize surface area is constant: Animals swallow, then digest their food internally, using the large surface area of the intestines to absorb nutrients. Plants, make their own food from light and minerals, and they must maximize their light-collecting and mineral-absorbing surface area. The nutritional needs of most organisms varies depending on their metabolism, but all life needs to take in some resources to live: Heterotrophs like animals and fungi, need to consume complex organic (fixed carbon), and also acquire all their mineral nutrition from their food. For plants, and most other phototrohs, virtually all their nutrition is inorganic meaning that they must synthesize all their own precursors form scratch. In addition to the use for energy production, most heterotrophs also require some complex organics as precursors to proteins, lipids, (e. g. , essential amino acids or lipids)
