LEC 12 - MCB 102 Professor Buchanan 3/30/09 Lecture 26 ASUC...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
MCB 102 Professor Buchanan 3/30/09 Lecture 26 ASUC Lecture Notes Online is the only authorized note-taking service at UC Berkeley. Do not share, copy or illegally distribute (electronically or otherwise) these notes. Our student-run program depends on your individual subscription for its continued existence. These notes are copyrighted by the University of California and are for your personal use only. D O N O T C O P Y Sharing or copying these notes is illegal and could end note taking for this course. ANNOUNCEMENTS Good morning, everyone. I trust you all had a productive spring break. I was in Japan, and the cherry blossoms were just beginning to come out. One of the things that did impress me since we’ve been talking about obesity is how slim the Japanese population is. Professor Malis went over everything in oxidative phosphorylation except for reactive oxygen species. You can look that up on your own. We’re going to shift gears now into plants, and today will be the light reactions. LECTURE Lecture XII: Oxidative phosphorylation and photophosphorylation II. Photosynthesis and photophosphorylation We’ll be talking about light, photosynthesis, chloroplasts, the two photosystems, water oxidation, and electron transport. Plants also have the property of cellular respiration, but we generally associate photosynthesis with plants. The rate of photosynthesis is much higher than respiration. It is the utilization of light that drives the uphill reaction of water into NADPH, releasing oxygen.
Background image of page 1

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

View Full DocumentRight Arrow Icon
MCB 102 ASUC Lecture Notes Online: Approved by the UC Board of Regents 3/30/09 D O N O T C O P Y Sharing or copying these notes is illegal and could end note taking for this course. 2 The sun, as you know, has a lot of hydrogen. There is a fusion reaction that causes hydrogen to produce helium, positrons, and gamma radiation. The positrons and the gamma radiation recombine to produce radiant energy that reaches the earth. The earth appeared about 4.5 billion years ago. Light appeared about 3 billion years ago, and oxygen developed 2.5 billion years ago. The light we’re concerned with is the visible spectrum. The wavelengths range from about 380 to about 750 nm. What we see is the violet light is the most energetic, whereas the red light has the least amount of energy. So the blue and violet is worth more in terms of energy than the longer wavelengths. This fits together with the photoelectric
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

LEC 12 - MCB 102 Professor Buchanan 3/30/09 Lecture 26 ASUC...

This preview shows document pages 1 - 3. Sign up to view the full document.

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