NOB Chapter 3, trouble studying?

[radl223]

Hi, I'm currently preparing for 3/4 biology in 2012 and after reading chapter 3 of NOB, I'm really confused as to what to study. The main topic I'm having trouble with is photosynthesis, specifically the light-dependent/light-independent stuff. The book is not very detailed and doesn't really help much. Do I need to know exactly what happens during the light-dependent stage e.g. how ATP is produced (in depth) etc... or just simply the basics which are outlined in the book? I've been watching videos to help me and I think that the videos are way too detailed, to the point where it is university level, but the book is just too broad to the point where I don't know where to start. Any ideas on what I should be studying when it comes to light reactions (chap 3)? Thanks in advance!

[ggxoxo]

I think you should be able to describe the step succintly (a couple of sentences); the location of the step; and, the reactants and products.

>So for the light reactions:

Location- thylakoid membranes
Reactant- water
Product- oxygen, hydrogen ions (as NADPH), ATP
OTHER THINGS REQUIRED: Light [obviously; that's why it's called light-dependent ]

Brief description- Chlorophyll traps light energy, which is used to split water molecules to hydrogen ions (which are taken up as acceptor molecules NADP to from NADPH) an oxygen (the oxygen is given off as waste). This step also produces ATP.

>Light-independent reactions
Location- Stroma
Reactants-Carbon Dioxide; hydrogen ions (NADPH)
Products- glucose; water
OTHER THINGS REQUIRED: ATP

Brief Description- CO2 and hydrogen ions are combined to form glucose in the Calvin Cycle. ATP provides energy neeeded for this step to proceed.

[radl223]

Awesome, I'll be sure to study those and also rather than using NOB I'm now using Campbell's for my notes. Thankyou!!

[ggxoxo]

Good luck!