BIOL 1050 Lecture 19: Bio 1050 Lecture 19 Oct 28 2016

• School: University of Guelph
• Department: Biology
• Course: BIOL 1050
• Professor: multiple

Document Summary

C3 (optimal growth in cool temperatures and low light: 26 degrees) only makes use of the calvin cycle for carboxylation pathway for co2, its reliant on the rubisco which has the problem of using o2 instead of co2. If you increase co2 levels when growing c3 plants (i. e. in a greenhouse), you reduce photorespiration and increase growth. Atp and nadph are flowing in for the reaction. C4 plants need less rubisco (replaces rubisco is in the bundle sheath), efficient at using nitrogen. C4 plants have lower transpiration rates because of the co2 concentrating mechanism. C4 plants use less water than c3 plants (45% less water) C4 acid is stored in the vacuole. Stomates are open at night and closed in the day. Predator defense: plants are immobile, their predators are microbes, insects, and animals, structural features, thorns, supports ant colonies, silica barbs make serrated edge, secondary metabolites (more biochemical diversity than animals, burning sensations, glycosides for blood system.