BIOL 1202 : Exam 5 Final Material
Document Summary
Adaptations for acquiring resources were key steps in the evolution of vascular plants. The broad category of nutrition includes all of the materials and energy needed for an organism to live and reproduce. The materials required for life are nutrients. Nutrition in all organisms involves four main steps: acquisition of nutrients: get the stuff you need to live, grow, reproduce, etc. Size/scale difference ex. amino acid vs protein: digestion, if required, distribution of nutrients throughout the body. Usually none large organic molecules; depending on what is available macromolecules are brought in and broken down into things the body can absorb (digestive system) through active transport, osmosis, diffusion. Required to break large molecules down to building blocks. Distribution generated by low-energy format with organisms this is necessary; most use bulk. Driven by osmosis and evaporation; pull single celled organisms; multi-celled osmosis and evaporation; flow; push = pumping mechanism.
