3bio3

Question 1

the calvin cycle
-Location
-what goes in
-stability
-potential energy
-total amount of stuff used

Answer 1

After the light dependent reactions, products are transported into the stroma. Their chemical energy is used to reduce carbon. The carbon cycle has three phases. CO2, ATP and NADPH go in, In the first, rubisco puts three CO2 from the atmosphere onto one RuBP each. The resulting 6C molecules are unstable so they split into two 3C sugars called 3-phosphoglycerate or PGA. There are now 6 3-phosphoglycerates, the first stable substrates. In the second phase, Each 3-phosphoglycerate is phosphorylated by an ATP which makes 6 ADPs and 1,3 bisphosphoglycerate. They are reduced by an NADH, using 6 NADPH. This turns them into G3Ps. The G3Ps are higher in potential energy. In the last phase Five of them are rearranged into three RuBPs, and each RuBP turned one ATP into ADP. The sixth G3P is released as a product, but two G3Ps make glucose so the whole cycle has to run again. The G3Ps can become any other type of carb too. A total of eighteen ATP, six CO2 and twelve NADPHs are used.