Chapter 13.1: The Light- Dependent & Light-Independent Stages of Photosynthesis

[@haenhill9277]

thank you doctor demi. These are really helpful. Can you please solve some more past papers 4 and 5. And also how to go about paper 5

[@johnmcgrath825]

Me, "ohhh the P in NADPH stands for Plan-"
Dr. Demi: "The P in NADPH can be easily related to the P in photosynthesis"

[@zainabshah-d1w]

funny

[@zainabshah-d1w]

btw can u help me w bio

[@pearlofillusions6270]

8:51 Isn't photosystem I P-700 and photosystem II P-680.

[@biowithdrdemi]

Yes that's the correct order. Sorry if there's an error in the video

[@davidaadefolaju4026]

thank you dr demi, but isn't glycerate-3- phosphate formed before the ATP and NADPH is used to produce triose phosphate??

[@DASTAGIRMOHMAND]

Thankyou so much. U just saved my final exams

[@austinmugala908]

You are the best Doc, thank you so much

[@NamatovuEstriana-fg6pd]

Thanks for that work I have rely understood the concept

[@jdegiov]

Photosystem 1 is P700 and not P680. That would be photosystem II

[@jernjustyle]

15.51 In the video already provided the right information as you typed

[@999-p8p]

after the was separated 6 molecules of g3p to 1 molecule g3p , g3p making 1/2 molecule of glucose but phosphates what they will do. will they help 5 molecules g3p for the releaseing 2 inorganic phosphate and adp converting to atp

[@samx9942]

I have a question... During cyclic phosphorylation, the excited electrons from photosystem 1 transfer energy for the pumping of hydrogen ions from the stroma into the thylakoid space. So what causes chemiosmosis to occur? Is it the energy from the hydrogen ions that diffuse through ATP synthase or from the excited electrons from photosystem 1?

[@tpwk9]

The energy from the hydrogen ions

[@valencia8916]

this helped me alot thankyou! sending love from singapore

[@samsyy-601]

What does it mean that Photophosphorylation can either be cyclic or non cyclic? does this mean sometimes cyclic occurs and sometimes non cyclic?

[@marfizzler6300]

Do we need to know about TP in the Calvin cycle?

[@mimimulla4403]

Hii could u do videos on the Anslysis paper fr A2 plz ( ppr 5 )

[@teeshajairam5741]

I wanted to ask that we say there is mitochondria in animals and chloroplast in plants but plants also have mitochondria so do they carry out respiration in same way as we do?

[@biowithdrdemi]

Yes plants can respire if the environmental conditions are right.

[@uroubamaheen6825]

Really nicely explained but just one question what is the weak reductant P680* in non cyclic phosphorylation

[@winsavierelias]

dear Dr DEMI its a new year and a new syllabus l kindly ask that you do a video on this year's sylabus you were a source last year for my as level sooooo ......pleassssseee help

[@biowithdrdemi]

Hi Tawana the syllabus is still very similar

[@ironman8961]

yea things hv only been removed not added

[@shahzadsulaman8743]

Isn’t gp converted to tp

[@i12-h6k]

it is

[@shahzadsulaman8743]

@@i12-h6k brut you like 11 months late 😂

[@ankitasudhir8457]

Thank you for the video. Isn't P680 Photosystem II and P700 Photosystem I?

[@ironman8961]

yea

[@pranidhisilva7672]

Thank u

[@MelissaMguni]

PS1 is 700 while PS2 IS 680