1. Catalyst 1. What two energy molecules are produced in the light-dependent reactions ? 2. What molecule (that photosynthesizing organisms take in from their environment) is used in the light-independent reactions ?

2. Agenda  Catalyst  Review light-dependent rxns (act out)  Calvin Cycle notes  Worksheet  HW: Sec 4.3 questions

3. Light Dependent Rxns

4. Calvin Cycle (Light-independent rxns)  Synthesis part of photosynthesis  Occurs in stroma  Uses CO 2 from atmosphere, and ATP and NADPH produced in L-D rxns, to make simple sugars

5. Calvin Cycle Six CO 2 needed to produce one six-C sugar 1. Carbon fixation: CO 2 added to RuBP (five-C sugar already in cycle) to make six-C sugar 2. Six-C sugar splits into three-C sugars 3. Energy from ATP & NADPH used to convert three-C sugars to GP3, three-C sugars with higher energy bonds 4. One G3P leaves. Can bond another three-C sugar to create six-C sugar such as glucose. 5. Three-C sugars still in cycle converted into RuBP using energy from ATP. Cycle repeats.

6. Calvin Cycle Animations & Video  Calvin Cycle (McGraw) Calvin Cycle (McGraw)  Nature's smallest factory: The Calvin cycle (TedEd) Nature's smallest factory: The Calvin cycle (TedEd)  Photosynthesis (Pearson) Photosynthesis (Pearson)  Calvin Cycle starts at 2:20

7. Calvin Cycle

8. Photosynthesis

9. Homework  Read Section 4.3 and answer questions 1-5

10. Photosynthesis Song  http://www.youtube.com/watch?v=pE82 qtKSSH4 http://www.youtube.com/watch?v=pE82 qtKSSH4  http://www.youtube.com/watch?v=4CK4 z4MDXuE (50 cent) http://www.youtube.com/watch?v=4CK4 z4MDXuE  http://www.youtube.com/watch?v=yrQzE w9xY5k (1, 2, 3) http://www.youtube.com/watch?v=yrQzE w9xY5k