Photosynthesis

Photosynthesis - Bild1: The Cell Fridays 10am Centr 217A...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Bild1: The Cell TA: Xu Yu Zeng Office Hours Fridays 10am Centr 217A xyzeng@ucsd.edu Mon. Tap Ex 11am Photosynthesis Heterotrophs : Obtain organic material by consumption Autotrophs : Produce organic materials using CO 2 and environmental materials Photoautotrophs : Use light, CO 2 , H 2 O to make sugars Photosynthesis: Light energy used to build carbon-based molecules. O 2 released as waste Anabolic pathway where enzymes and light energy use CO 2 and H 2 O to build organic molecules, like glucose The reduction of organic molecules requires energy (∆G>0=nonspontaneous) 6CO 2 +6H 2 O+Light C 6 H 12 O 6 +6O 2 Chloroplasts : the organelle where photosynthesis takes place. Absorb all λ except green Photosynthesis occurs in 2 steps: Light reaction, Calvin Cycle Light Reaction : Harvests light energy to make chemical energy using e- flow. Occurs in thylakoids. 2 O to replenish e-, releases O 2 waste Light absorbed by chlorophyll in photosystems. Chlorophyll: pigment containing magnesium, serves as light receptor. Absorbed
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online