Interview
IB HL biology photosynthesis and respiration
- Course
- Institution
- Book
It covers topic 2.8 and 8.2 for IBDP level biology higher level.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
All the information for topic 5 IB Biology SL
-
All the information for topic 4 IB Biology SL
-
Information for topic 3 IB Biology SL
Seller
Follow
arathi3000
Content preview
GBBBBB 8132313878000By Arathi Anand
2. 8,8 :
2
glycolysis
Krebs agile
Electron transport chain
chemissmosis
, Topic 2.8 Cell Respiration
-
⇒ controlled release of energy from
organic compounds in cells to form ATP
① Lf ⑤ ④ Wf
.
o
organic compounds from the food we eat such as glucose contain
stored within their covalent bonds
energy .
°
All living organisms carry out cell respiration in order to convert
stored energy into a form that can be used
by the cell .
When organic molecules are broken down the
energy formed is
°
,
eventually stored in a high energy molecule called ATP .
° Cell respiration is the controlled release of from organic
energy
compounds in cells to
produce ATP .
① WOOD ⑥ ③ BG
° Alcohol fermentation ( for yeasts and plants) :
irreversible
→ ethanol t
coz
pyruvate
0 make breads , make alcohol , make biofuel
Application :
0 Lactic acid fermentation (for human and some
bacteria :
pyruvate ¥9 lactic acid
, lactic acid bacteria make yogurts
° Glucose (GC ) is broken down into 2 pyruvate ( 3C) in the cytoplasm
There is a net
0
gain of 2 ATP molecules
0
Glycolysis does require oxygen
not
o Anaerobic respiration ( without oxygen ) occurs in the cytoplasm
°
During glo cloysis , glucose is convened to pyruvate , if no oxygen is available
pyruvate is further converted in to lactate or ethanol depending on
organism
the .
° When no oxygen is available, humans convert pyruvate into lactate with
no further ATP
gain of .
°
because like pyruvate , lactate is also a 3 carbon molecule
NO CO2 is produced .
° In
yeast and plants , pyruvate is converted into ethanol (2C) and carbon
dioxide with no further yield of ATP .
° Ethanol and CO2
are excreted as waste products .
NET ATP GAIN : z
⑨B ⑥ ③ 2) G
°
respiration also begins with glycolysis
Aerobic which produces 2 pyruvate
molecules per glucose .
° Aerobic
respiration occurs in the mitochondria .
0 Aerobic is much more efficient than anaerobic respiration as the glucose molecule is fully
oxidized
° The products created in the redox reactions of the kerb 's cycle , plus oxygen
(terminal electron acceptor) will produce large quantities of ATP
through oxidative
phosphorylation ( phosphate added to ADP to form ATP ) in the ETC , with water
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller arathi3000. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R139,77. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
60904 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now