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Revise in details that i am going to tell you. Transport in man, Enzymes.
why in particular these two chapters?
No bro.. That A2 syllabus, paper 2 is AS!
Im doing Olevels
im freaked out here
thank u so much!!Just revise everything!!! Don't leave anything behind !
Grasp all the courage u can and study all the complex processes esp :
-Active loading of sucrose into sieve tube element
-Initiating heart beat by the contracting of the SAN and how the wave of excitation spreads over the arterial walls to ventricles
-Nitrogen cycle
-Atherosclerosis
-Endocytosis
-Translation ,DNA replication and transcription
We have to revise evrything koz in biology there is almost no trend in the past examination questions!!And there are always new questions which crop up
what about the past papers ?? which is more important to focus on??? cuz revizing takes a lot of time u knowDo past papers from 2008 to 2012. suppose you are starting with june 2012. the firs ques is on cell membrane, before doing it revise cell membrane then try doing it without looking at your notes. the scond ques is on immunity, revise immunity before doing the questions and repeat this with all other questions.thank u so much!!
so true!Just revise everything!!! Don't leave anything behind !
Grasp all the courage u can and study all the complex processes esp :
-Active loading of sucrose into sieve tube element
-Initiating heart beat by the contracting of the SAN and how the wave of excitation spreads over the arterial walls to ventricles
-Nitrogen cycle
-Atherosclerosis
-Endocytosis
-Translation ,DNA replication and transcription
We have to revise evrything koz in biology there is almost no trend in the past examination questions!!And there are always new questions which crop up
When the concentration of carbondioxide increases then the the following reaction happens , carbonic anhydrase the enzyme present in the red blood cells forms carbonic acid on a reaction with water, which dissociates forming hydrogen carbonate and hydrogen ions. hydrogen carbonate leaves the RBC and becomes the main source of Co2 and hydrogen ions react with haemoglobin forming haemoglobinic acid which releases oxygen.! so in conclusion when the partial pressure of carbondioxide increases this decrease the affinity of haemoglobin to oxygen and makes it release oxygen!
Thank youu
thank u so much!!
Sniff
IKR!!!!! Omg I hope Allah will help us isA....i just did the oct/nov 2011 nd il revize now then if i have time i will do may/june 2012... I think Revision is way more important cuz questions are never repeated anywayI tried revising past papers . It took me 1hr for each paper . There's 35 papers to work out meaning more than a day .we don't have more than a day . so i opted for revising what i don't know . We don't have time
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