Lecture 39 Photosynthesis II

Lecture 39 Photosynthesis II - Biol141 Foundations in...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Biol141 Foundations in Modern Biology Cellular Biology and Genetics Lecture 39 – Monday, December 5 th , 2011 Photosynthesis II—the light independent reactions. Reading: Freeman. Chapter 10. Pages 184-190.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Learning objectives At the end of this lecture, you will be able to: 1) Describe the fixation, reduction, and regeneration steps of the Calvin cycle. 2) Explain the two different reactions catalyzed by the enzyme, Rubisco. 3) Discuss the effect of stomatal opening upon the rate of photosynthesis. 4) Describe two mechanisms for increasing CO 2 concentration in leaves.
Background image of page 2
Photosynthesis can be divided into two pathways : – The light-capturing reaction is driven by light energy captured by chlorophyll. It produces ATP and NADPH. – The Calvin cycle does not use light directly. It uses ATP, NADPH, and CO 2 to produce sugars. 1. Photosynthesis occurs in the chloroplasts of green plant cells and consists of many reactions.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The energy transformation of the light-dependent reactions and the CO 2 reduction of the Calvin cycle are two separate but linked processes in photosynthesis. ATP and NADPH are produced by Photosystems II and I in the presence of light. The Calvin cycle reactions that produce sugar from CO 2 are light- independent— they require ATP and NADPH produced by the light-dependent reactions.
Background image of page 4
CO 2 reacts with ribulose 1,5 bisphosphate (RuBP), producing two 3-phosphoglycerate molecules. 1.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 16

Lecture 39 Photosynthesis II - Biol141 Foundations in...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online