🎵 Luyện Nghe Bài Hát: Photosynthesis - Glenn Wolkenfeld

 Photosynthesis
 Non Cyclic Electron Flow and The Calvin 
 Amusical  by Glenn Wolkenfeld
 
 Thanks for joining us  Episode Two,
 Wher more ‘bout photosynthesic waits for 
 We last saw how plant cells create, O¬¬2, ATP,  NADPH.
 Now we’ll start with a twist on  light reactions,
 Called cyclic flow, we’ll see how  happens.
 Then we will investigate  the Calvin Cycle makes carbohydrate.
 
 (Part I, Cyclic Electron 
 Non – cyclic flow is also called the “Z –  Put Z on its site and see what I mean.
 Electrons rise  energy then fall and rise again.
 Making ATP  NADPH my friends.
 A variation on this is cyclic 
 Which makes ATP, no NADPH or 
 Cyclic flow  from the Calvin Cycle’s needs.
 It  less NADPH than ATP.
 NADPH buildup has the repercussion, of  NADP+ reduction.
 ‘cause NADPH  up reductase.
  NADP+ from moving into place.
 So  don’t go to NADP+.
 They’re clogged,  like a pimple’s pus.
 Where can  go from P700?
 Nature evolved them a  to flow.
  shunt pathway moves them to the ETC.
  talking ‘bout the one in PS II tou see.
 These energized alectrons  and release energy.
 Which as you know is used to  ATP.
 
  Part II: Calvin Cycle)
 Now it’s time to learn the  named for Calvin.
 Which results in the  of carbon.
 Consider that each carbon in your bones, blood and 
  once in a CO2 in the air.
 The  Cycle has three parts.
 Fixation of carbon  how it starts.
 The  produced rae then reduced.
  reduction is the key thing that happens in part 2.
 Part 2 is the  as you will see.
 It produces molecule 
 A reduced  with lots of energy.
 And a starting  for all the molecules that cells need.
 Part 3 sets up  for the cycle’s start.
 By  what’s at the cycle’s heart.
 RuBP (Ribulose Bisphosphate), a  carbon molecule that seems to apparate.
 ‘Cause RuBP’s at  cycle’s start.
 Then  at the very last part.
  role of RuBP at the start and end.
 Is why this is a  like the one named Krebs.
 The cycle’s inputs are know to you: NADPH  ATP and CO2
  of carbon is catalyzed by RuBP Carboxylase Enzyme
 This enzyme’s  you should know.
 Sounds like  cookie maker: it’s RUBISCO.
 An enzyme so  it was already here,
 Before O2 accumulated in  air.
 The CO2 enters through  stoma, diffusing through the leaf and arriving at the stroma.
 There RuBisCO grabs  in its active site, and squeezes it with RuBP tight.
 RuBP has carbons five, it  two phosphates, one on each side.
 When CO2  with RuBP it makes a six carbon compound you won’t see.
 It  dissociates into two 3 – phosphoglycerates,
 Each  three carbons and one phosphate.
  gets phosphorylated to bisphosohoglycerate.
 Phosohorylated means that each receives  group from ATP.
 This phospharylation, is followed by 
 And you know  an enzyme with the function.
 Of taking electrons and H from  and adding them to to bisphosphoglycerate.
 Take off a phosphate for Glycealdehyde – 
 A starting point for  like carbohydrates.
 
  III: Calvin Cycle, conclusion)
 Glyceraldehyde- 3  phosphat, known as G3P,
 as a product cells  and I hope you see,
 how  reactions NADPH and ATP,
 are needed to fix CO2 and make organic 
  to complete the cycle we must now regenerate.
 The starting  of Calvin Cycle ribulose bisphosphate.
 The intermediates involved  taking G3Ps,
 And  them into RuBPs.
 Are too  for freshman biology.
 You can get the details  you get yors Ph. D.
 But know for now that  get 3 RuBPs from 5 G3Ps cost 3 ATPs!
 
 (Part  Conclusion)
 Now this journey ends whit its 
  the reaction of photosynthesis.
 For over four billion years  been the food chains basis.
 In  from that era you can see the traces,
 Of tiny cells with prokaryotic 
 Stromatolites  lived in waters warm.
 Through photosynthesis they  our planet,
 So aerobic life can live  it.
  so evolved sentient beings who can analyze,
 How  can photosynthesize.
 You could say that photosynthesis gave birth to codiyions for cons ciousness  Planet Earth!