Predict how the following conditions would affect the production of O2, ATP, and NADPH and state whether noncyclic or cyclic electron flow would occur in each;(3) blue and red photons hit a chloroplast, but a proton channel has been introduced into the thylakoid membrane, so it is fully permeable to protons.

Video transcript

Welcome back. Here's our next question which of the following is incorrectly matched. And we're talking you can see in our answer choices. Each of them matches something with either cyclic or non cyclic photo phosphor relation. Well, as we recall from our content videos, photo phosphor relation is that first step in photosynthesis when light energy is absorbed from the sun and the excited electrons are excited in the pigments. And that energy is used to add add a phosphate group to a molecule of ADP and produce a teepee. So storing the energy absorb from the sun as a teepee. And there's two forms of it cyclic photo phosphor relation and non cyclic. So let's kind of think briefly about the differences there cyclic is called that because it recycles the electron that gets excited by the absorption of the sunlight and returns it to the chlorophyll That absorbs the light energy in the first place called P 700. As a result, it produces ATP um as that electron after it's excited goes down an electron transport chain. A T. P is produced. However, at the end of that electron transport chain, the electron has returned to the chlorophyll instead of being passed on to an electron except er So it does not produce N A D P H N A D P is an electronic sector that in non cyclic photo correlation accepts the electrons that have been excited and you get the production of N A. D. P. H. But that does not happen here since that electron has returned to the chlorophyll. So non cyclic the electron that's been excited by absorbing the light is passed on to an electron except her N A. D. P. Causing N A. D. P. H. To be produced. It also produces a teepee just as the cyclic variety does as it captures the energy from the light. It also needs water because this process of producing any Bph requires the license of a water molecule. So water is needed continuously for this process. So let's look at our answer choices to look for the one that is incorrectly matched. So Choice A says cyclic relation only a teepee formation. We see that here under cyclic produces only A T. P. Does not produce an A. B. Ph So that is correctly matched and therefore can't be our answer choice B says non cyclic photo phosphor relation, both a teepee and and A D. P. H. Formation. And yes that is true. So this is correctly matched and therefore isn't our answer choice E says non cyclic photo phosphor relation also called the Z scheme. Well, the Z scheme refers to the shape of the diagram of how the electrons are being transferred in these processes. So in the cyclic photo phosphor relation, that electron is cycling back to the chlorophyll. You can imagine that as a circular pathway in non cyclic you have the electron Getting absorbed by this chlorophyll, oops sorry that's the wrong chlorophyll there. P 680. The electron gets excited by the absorption of light energy. It passes down through the electron transport chain where you have a T. P. Being produced Used the p chlorophyll gets excited again and then transferred to N A D. P. Going to n a D p H. So when you look at the diagram of which way the electrons going, it looks like a Z. It's in the shape of a Z as opposed to the cycle. So that is the correct match there. So this diagram is called the Z scheme, just due to the shape of it. So that is also correctly matched and therefore not an answer. Finally, we're on Choice D cyclic photo phosphor relation. And Fotopoulos sis that is not correct analysis. Is that break license of a water molecule and that's over here in non cyclic photo phosphor relation. So Choice D. Is the incorrect pairing. See you in the next video