4.8 • 750 Ratings
🗓️ 11 March 2020
⏱️ 40 minutes
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0:00.0 | Oh, wow, oh, oh, oh, wow, oh, oh, wow. |
0:13.0 | Oh, wow. |
0:15.0 | Oh, my. Hello, you're listening to The Science of Everything podcast, episode 102, Photosynthesis Part 2. |
0:40.4 | I'm your host, James Fodor. |
0:42.3 | So in the previous episode, we began talking about photosynthesis. |
0:45.1 | In particular, I discussed an overview of what photosynthesis is, and I talked about |
0:50.6 | photosystem 2 and how that absorbs light in the chlorophyll molecules and how |
0:55.9 | the electrons are excited and pass through different components of the photosystem 2, eventually |
1:01.2 | passed on to Plastic Quinone, which diffuses through the thylacoid membrane, and is passed on |
1:06.3 | to cytochrome C complex, and I explained how that process is used to pump hydrogen ions across |
1:13.7 | from outside to inside the phylochoid membrane, and how that is used to generate a proton gradient. |
1:20.4 | So that's what we got up to at the end of the previous episode, and if that's all very unfamiliar |
1:24.5 | or you've forgotten, recommend relistenlistening to that because I'm just going |
1:27.6 | to pick up from where I left off there. In this episode, I'm going to start by explaining |
1:32.1 | how the oxygen evolving complex provides electrons that are subsequently energized by the |
1:39.1 | absorption of light and then pass through photosystem 2 and so on. I'm going to explain how |
1:43.9 | these electrons are sourced from, ultimately from water via the |
1:47.9 | oxygen-in-volving complex. |
1:49.1 | So this is a critical component to the process that I'll start by explaining, and then I'll |
1:54.1 | proceed by finishing off the story of photosynthesis by talking about Photosystem 1 and then ADP |
2:00.1 | reductase, and then also looking at the light |
2:03.4 | independent reactions and some other aspects of photosynthesis. So then let's begin by talking about |
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