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A2 Biology | Post your doubts here

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Errors in the MarkScheme??!
43/O/N/11 Q11 b
Chiasma formation in metaphase I? Isn't it supposed to be late prophase I?
41/O/N/10 Q9 a
Males homogametic? Aren't they supposed to be heterogametic?
and finally... 43/M/J/10 Q7 c
Anaerobic respiration in yeast involves ethanal dehydrogenase? Isn't it supposed to be alcohol dehydrogenase?
So, is it me or they are really making MISTAKES???
exactly even i was confused with the ethanal dehydrogenase 1...it is suppose to be alcohol dehydrogenase...
 
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alhumdulilah it was nice..assalamoalaikum wr wb btw :D
remind me after a few hours :D pm me..
and i'll try telling u abt the describe part...thats easy...
tell me too....m also not doing good at describing graphs
 
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biodiversity is the presence of a variety of species, the variation within species and the genetic diversity between the species.
 
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here is my guess;cnsidering previous papers
EXCRETION.....
FEREMENTER,batch/continuous culture,penicillin production
biodiversity meaning,reasons for mantaining it,
interpretation of action and absorption spectra,
gm crop,golden rice,BT maize/inbreeding in maize+polyploidy in wheat
chi square test,dihybrid

question related to isolating mechanisms and natural selction for section B......
 
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