Class notes for CIE Cambridge International AS and A Level Biology Coursebook; Chapter: Photosynthesis
8 views 0 purchase
Course
CIE
Institution
CIE
Book
Cambridge International AS and A Level Biology Coursebook with CD-ROM
Well written and developed notes, providing a detailed description and understanding on the chapter, Photosynthesis. This chapter is studied in A2 during A-Levels and discusses in depth, how plants use light energy to synthesis energy. These are electronic notes written under the lectureship of Dr....
these are light harvesting clusters made up of photosynthetic pigment molecules
.
primary pigment is made up of chlorophyla .
Accessory pigments consist of all other
molecule
-
photo activation : it is emission of high
-
energy electrons from chloro phyla
molecule when light energy falls on it .
.
accessory pigments are present around the primary pigment in the form of a
cone They help to collect and direct light energy towards the primary pigment
.
and they avoid loss of light energy
TYPES OF PHOTOSYSTEM's
I. photosystem I or 17700
photoactivation occurs at wavelength of light energy
700hm
-
Max -
II. Photosystem I Or 13680 Both PI and PI are present in a thylakoid
.
.
Kitt DEPENDENT REACTION
location : thylakoid
•
I cyclic phosphorylation
-
ADP 1- Pi ATP presence of light
Describe cyclic PPR .
-
Only PIP 700 is involved
•
light energy falls on the primary pigment photoactivation center of PI
high energy electrons are emitted from chlorophyll , a molecule
.
•
. electrons pass through ETC located in thylakoid membrane .
.
che miosmosis occurs and ATP is made .
.
electrons fall back into PI therefore . . . .
cyclic PPR
.
product of cyclic PPR ATP only
compare tabulate state differences between oxphos and cyclic PPR .
4
\ non -
cyclic phosphorylation .
both PI and PI are involved
i. Describe events of non -
cyclic PPR . 6 marks
PI involved
30th PI and are
.
photoactivation occurs , electrons are emitted from both photosystems
membrane, release energy which is used for chemiosmosis
.
electrons pass through ETC of thylakoid
-
ATP is made
. I do not fall back into their original system that is why it is called non -
cyclic PPR .
replaced by e- from PI
-
e- lost from PI are
-
e- lost from PI are replaced by é mole photolysis of water
in
.
photolysis of water occurs inside thylakoid space by an enzyme
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Zainabnawaz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.90. You're not tied to anything after your purchase.
