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Physics, Chemistry and Biology: Post your doubts here!

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Yes, and what are the hardest topics to revise for bio paper 3? pregnancy, nervous system, or what?? Pplz help, i'm so nervous!!
 
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How do the thresholds work for the phy, bio & chem if you do p1, p2, & p3. Can anyone predict what I need to get for an A in them
 
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can anyone pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee help me wid inheritence in biologyyyy!!!!!!!!!!!!!!!!!
i knw 2moro is maths paper 4/3 buh m done revising for dat i wnt *SERIOUS* help in inheritance day after 2moro is bio paper 3 dats y :(
 
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can anyone pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee help me wid inheritence in biologyyyy!!!!!!!!!!!!!!!!!
i knw 2moro is maths paper 4/3 buh m done revising for dat i wnt *SERIOUS* help in inheritance day after 2moro is bio paper 3 dats y :(
What part of inheritance do you need help with?
 
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oh n cn ny1 explain 2 me wt actually allels are?! jus dnt seem dnt get da hang of it :/
 
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Yes, and what are the hardest topics to revise for bio paper 3? pregnancy, nervous system, or what?? Pplz help, i'm so nervous!!
as far as i knw structured questions on mensuration n pregnancy do come!! n do focus on topics of plants :) n do as much past papers as u cn *AFTER* revising completly n testing ur self on hw much u knw as per da syllabus :) *GOOD LUCK* God will help :) jus stay confident ;)
 
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Q1. a) av.speed= (v+u)/2
=15m/s
b) a=(v-u)/t
a=(20-10)/60
a=(1/6)m/s2
distance=ut+1/2at2
=(10*60)+1/2*(1/6)*(60)2
=600+300
=900m

Q2. t=(v-u)/a
t=(1100-600)/10
t=500/10
t=50h

Q3. t=(v-u)/a
t=(0-20)/-5
t=-20/-5
t=4s.
i didnt get question 2 could u reexplain it please
 
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as far as i knw structured questions on mensuration n pregnancy do come!! n do focus on topics of plants :) n do as much past papers as u cn *AFTER* revising completly n testing ur self on hw much u knw as per da syllabus :) *GOOD LUCK* God will help :) jus stay confident ;)
Thanks so much :) Good luck to all of you too!
 
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I know this is a little late, but for bio, focus on the questions on plants (nutrition, limiting factors, growth.) I personally find them a bit tricky! And read up on antibiotics, bacteria, and genetics, as if they ask questions on these topics they usually hold quite a few marks. For the inheritance unit, you should know how to do the genetic crosses, and know about the female hormones and how they change in conc, the role of the placenta, amniotic sac. The enzyme chapters are also important! Especially for digestion, know all the conversions.
Finally, just keep calm, and don't worry too much! Good luck! :)
 
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