BIS 2B Lecture Notes - Lecture 4: C4 Carbon Fixation, Phycocyanin, Phycoerythrin

• School: UC-Davis
• Department: Biological Sciences
• Course: BIS 2B
• Professor: Laci Gerhart-Barley

Document Summary

Diversity of function for: acquiring nutrients, dealing with stressful environmental conditions, defending against predators and pathogens. There is a limited amount of energy that can be used for all life processes like obtaining food, escaping predators, pathogens, reproduction, growth and metabolic function. Energy applied to one function cannot be applied to another function. Autotrophs- self feeding: photoautotrophs- plants use sunlight, chemoautotrophs- some bacteria use chemical components. The process by which plants obtain energy by utilising light energy, co2 and water giving glucose and oxygen. The light reaction in which light energy is harvested and the calvin cycle in which this energy is utilised for building sugar. Photosynthetic pigments- chlorophyll a, chlorophyll b, carotenoids, phycocyanin, All mesophyll cells take up co2 and build sugar. Mesophyll cells take up co2, bundle sheath cells build sugar. More water efficient than c3: cam pathway. Separate co2 uptake and sugar, in time.