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Bio 42 2015!!!
Was it really that easy? People say section b was really hard -
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Bio 42 2015!!!
Hey,how did it go for you guys? Was it hard? We're there any tricky or unusual questions? -
Biology P51
Guys how many marks will I lose for halving the concentrations? -
Biology P51
[QUthat's Senorita.K, post: 916533, member: 143857"]when you are using serial dilution method you dont have to use any formula :) c1v1=c2v2 formula is used for normal dilution(dilution other than serial dilution) , you can never use this formula for serial dilution because serial dilution means... -
Biology P51
I wrote that we will use serial dilution and did the halfing method (decrease the conc by half each time ) is this correct ? -
Biology P51
What did you guys write in the dilution question?? Please answer ? Was it serial or proportional ? -
Hey could I ask what the topics of paper 52 biology were please?
Hey could I ask what the topics of paper 52 biology were please?- oahmed64
- Profile post
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Hey could I ask what the topics of paper 52 biology were please?
Hey could I ask what the topics of paper 52 biology were please?- oahmed64
- Profile post
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Hey could I ask what the topics of paper 52 biology were please?
Hey could I ask what the topics of paper 52 biology were please?- oahmed64
- Profile post
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Hey could I ask what the topics of paper 52 biology were please?
Hey could I ask what the topics of paper 52 biology were please?- oahmed64
- Profile post
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A level Biology: Post your doubts here!
Mahmood Magdy, thanks for answering, could you PLEASE answer my question again ? One thing I do not understand is what does it mean when they say in the mark scheme that ferric oxidizes other ores ? does this mean that the bacteria oxidizes ferrous to ferric and then ferric oxidizes sulfide to... -
A level Biology: Post your doubts here!
Hey could anyone PLEASE give me a model answer for how bacteria is used in extracting metals? -
Biology P41 and P51 June 2015 difficulty poll and exam prediciton
Hey guys Really nervous for the upcoming exam,just wanted to get you opinions on how you think the exams will be difficult this year. Share with us your opinion on what topics you expect the examiner to be brining this year and what we should focus on. Add any valuable tips you have so it may... -
Help with very hard question in biology P5
Hey, Can anyone help me with this reallly hard question (J14,52,Q1,E)I AND II) -
A level Biology: Post your doubts here!
Guys,please,Im extremely confused in the nervous system.In my notes,it says that energy from stimulus causes the voltage gated channels to open but in other notes it says that action potential from the RECEPTOR (which converted the stimuli into energy) to open.So in a nutshell,what causes the... -
Chances of getting an A* - Biology A-Level ? Help seriously appreciated !
SA, I sat for my biology AS in the June 2014 session and I got an overall A.However,the component marks made my feel a chill in my spine.Apparently I got a low A. P1:27/40 P2:44/60 P3:18.8/40 Now I feel REALLY scared and hopeless.Is it possible for me to still get an A* ? How much would i... -
HOW WAS THE ENGLISH EXAM (0510) -- GENERAL DISCUSSION
which questions in the comprehension did you find hard ?- oahmed64
- Post #15
- Forum: O-Levels / GCSEs / IGCSE
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HOW WAS THE ENGLISH EXAM (0510) -- GENERAL DISCUSSION
yeah me too,what did you write about in both writings ?- oahmed64
- Post #14
- Forum: O-Levels / GCSEs / IGCSE
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HOW WAS THE ENGLISH EXAM (0510) -- GENERAL DISCUSSION
yes,what did you write for that question that asked about whats unique in the houses constructed by the kids ?- oahmed64
- Post #13
- Forum: O-Levels / GCSEs / IGCSE