In this video, we're going to talk about how to memorize the steps of the light reactions of photosynthesis. And so here at Clutch Prep, we've come up with a really unique and interesting story designed specifically to help you guys remember the most important components and the most important events of the light reactions in the correct order. And so really, you'll only be able to find this story here at Clutch Prep. So you guys are pretty lucky. Alrighty. So let's get started here with this image.
And so when you're thinking about the light reactions, you want to think about Luke and Ryan. So, Luke and Ryan, when you're thinking about the light reactions. And so notice that we have a picture of Luke and Ryan down below right here. And so when you're thinking about the light reactions, you think about these two kids, Luke and Ryan, who just want to play their PlayStation 2. That's all they want to play is their PlayStation 2, and their PlayStation 2 is of course abbreviated as PS 2. And if you don't know what a PlayStation 2 is, it's a video gaming console. You can play video games on it. And so PlayStation 2, this PS 2 here is supposed to represent photo system 2. And so by remembering this PlayStation 2, you'll be able to remember that photo system 2 is actually coming first in this process of the light reactions.
But then after Luke and Ryan wanted to play their PlayStation 2, they realized that they could not find their electronic controllers to play their PlayStation 2. And so the ETC here in the electronic is going to represent the electron transport chain. And so this represents the ETC. And so after the photosystem 2, there is the electron transport chain.
And so because Luke and Ryan tried to play their PlayStation 2 but they couldn't find their electronic controllers to play their PlayStation 2, they then decided to try to play their older PlayStation 1 or PS 1 for short, and of course, the PS 1 is older. It was discovered first before PlayStation 2, but, of course, the kids want to play their PlayStation 2 first before they play their older PlayStation 1. And so here, PlayStation 1, the PS 1 here is representing photo system 1, which again was, discovered first before photo system 2, and that's why they called it photosystem 1. But then later they realized that photosystem 2 comes first in the process of the light reactions before photosystem 1.
So then Luke and Ryan, they went to play their PlayStation 2. They couldn't find the electronic controllers to play their PlayStation 2, so they decided to try to play their PlayStation 1. But then they forgot that their mom had reduced the number of games that they had for their PlayStation 1. And so what that means, what this is supposed to represent, the reduction of the number of games, is supposed to represent the reduction of NADP+ into NADPH. And so the ends here and the number can remind you of the n in NADPH and NADP+.
And so it's NADP+ that's going to get reduced here. It's going to gain electrons and become NADPH. And so because Luke and Ryan, they went to play their PlayStation 2, but they couldn't find their electronic controllers, they tried to play their PlayStation 1, but forgot that their mom had reduced the number of their games, so they couldn't even play their PlayStation 1, they then decided to just study chemistry instead. They decided to just study chemistry. And the "chem" in chemistry, I'm sorry, in chemistry, is supposed to represent the "chem" in chemiosmosis.
So the "chem" in chemistry is supposed to represent the "chem" in chemiosmosis. And so you can see here that, Luke and Ryan are now studying their chemistry here. And so you can see by just remembering this crazy unique and interesting story here, you can remember the most important components and the most important events of the light reactions in the correct order. And so this here concludes our lesson on how to memorize the light reactions of photosynthesis, and we'll be able to get some practice applying these concepts as we move forward in our course. So I'll see you all in our next video.