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PHYSICS P42 2015 !
the last part what was it about and how many marks did it carry -
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PHYSICS P42 2015 !
hey what was the last and second last part of the quantum question? -
Chemistry: Post your doubts here!
hey is OH an electron withdrawing group? -
A-level biology paper 42
allopatric is due to geographical terrain and sympatric is due to reproduction. -
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it was good except for the calvin cycle part a the naming of compounds .how was yours
it was good except for the calvin cycle part a the naming of compounds .how was yours- forsaken
- Profile post
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Biology P22 October 2014
yes the question was referring to nitrate ions. what i mean by large molecule is they are big compared to O2 and CO2 etc.when a molecule[a] is moving from a high to low conc , nitrates bind to the site of the protein when molecule[a] is moved by it and goes along for the ride.so for nitrates its... -
A level Biology: Post your doubts here!
i got it from somewhere hope this helps -
Biology paper 2 Answers discussion
bacteria are incapable of mechanically penetrating the cultinized plant tissues, culticle, periderm, etc. Since the ability to form appresoria is lacking in them. The ways of gaining entry into the plants are as follows. 1. Active invasion by bacteria through non-cultinized surface is sometimes... -
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A level Biology: Post your doubts here!
the question says that how many molecules will be attached , 6 and 8 is wrong because 12 and 16 atoms can not attach at the site with 8 atoms max space.now 2 molecules means two haeme groups will be left unused so it leave you with b. correct me if i am wrong -
Biology P22 October 2014
you should know that nitrates are polar and large molecules so squeezing through the phospholipid is out of the question.then about trans membrane proteins. carrier protein requires ATP for small molecules or ions large molecules like nitrate will need quite alot of ATP.so your choice is left... -
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A level Biology: Post your doubts here!
do we have to study microglia and astrocytes in nervous system -
Who is sitting the exam in M/J 2013?
fine and done- forsaken
- Post #103
- Forum: O-Levels / GCSEs / IGCSE
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IGCSE Maths-Exam Tips!!!!!
thanx can you give tips about bio atp and paper 3 and chem as well- forsaken
- Post #6
- Forum: O-Levels / GCSEs / IGCSE
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Who is sitting the exam in M/J 2013?
I want tips about English chem and bio- forsaken
- Post #101
- Forum: O-Levels / GCSEs / IGCSE
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IGCSE Maths-Exam Tips!!!!!
can any of you help me how to get an A* in maths- forsaken
- Post #4
- Forum: O-Levels / GCSEs / IGCSE