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IGCSE Edexcel Biology May 17th 2016

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Reply 20
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ngjpizza
How was your paper guys?
Reply 21
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Original post by Rrosse
I found the paper easy , how about you guys??
i did it about 2 hours ago


I literally want to die
Reply 22
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Original post by ngjpizza
How was your paper guys?


Sucked balls
Original post by gameofno
Sucked balls


what did you get for the speed of an electrical impulse?

what did you get for A and B (eye of sparrowhawk) and other parts of the eye?

the greenhouse questions?
Reply 24
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Original post by dRaGoN2509
what did you get for the speed of an electrical impulse?

what did you get for A and B (eye of sparrowhawk) and other parts of the eye?

the greenhouse questions?


I got 0.0075 but apparently the answer was 0.75 LOL
For the eye I wrote the iris & pupil
Which greenhouse q??
Reply 25
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Original post by dRaGoN2509
what did you get for the speed of an electrical impulse?

what did you get for A and B (eye of sparrowhawk) and other parts of the eye?

the greenhouse questions?


For the 'reflects light onto retina' what did you put
lens
Original post by gameofno
I got 0.0075 but apparently the answer was 0.75 LOL
For the eye I wrote the iris & pupil
Which greenhouse q??


At first I put 0.0075 as the distance was in cm (90cm) and the speed was in m/s so I tried to convert it. But then I don't know why I changed it to 0.75. :/
For the eye I put pupil for B but I f**ked up A so bad..
The 5 mark greenhouse question was on something like advantages fewer greenhouse gases have.
Original post by gameofno
For the 'reflects light onto retina' what did you put


I put lens as well. I put conjunctiva for the first one and optic nerve for the second one.
What did you guys put for why the heart rate at rest is different to that before exercising and also for why having sexual intercourse at a certain time during the menstrual cycle is not a safe way of making sure the egg won't be fertilized
Original post by aubameya31
What did you guys put for why the heart rate at rest is different to that before exercising and also for why having sexual intercourse at a certain time during the menstrual cycle is not a safe way of making sure the egg won't be fertilized


I can't remember what I put for the heart rate and for the sexual intercourse question I put that fertilisation was a random process so the egg could be fertilised at almost any time between when the oestrogen levels are high and before the progesterone levels drop. I also put that there're many sperm so fertilisation chance is increased by this.
Reply 31
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Original post by dRaGoN2509
At first I put 0.0075 as the distance was in cm (90cm) and the speed was in m/s so I tried to convert it. But then I don't know why I changed it to 0.75. :/
For the eye I put pupil for B but I f**ked up A so bad..
The 5 mark greenhouse question was on something like advantages fewer greenhouse gases have.


Dude 0.75 is the right answer!
Ohhh that. I said: polar ice caps won't melt, sea levels won't rise, global temp won't increase, warm water wouldn't go to previously cooler areas, and less agricultural changes would have to be made because pests won't be more abundant if the temp doesn't increase
Wbu?
I FORGOT ABOUT ACID RAINN UGHH
Reply 32
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Original post by dRaGoN2509
I put lens as well. I put conjunctiva for the first one and optic nerve for the second one.


OMG I put cornea :frown: damn
does anyone have an unofficial mark scheme??
Reply 34
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Original post by aubameya31
What did you guys put for why the heart rate at rest is different to that before exercising and also for why having sexual intercourse at a certain time during the menstrual cycle is not a safe way of making sure the egg won't be fertilized


Wait what do u mean why the heart rate at rest
Original post by gameofno
OMG I put cornea :frown: damn


LOL I went full retard and put cornea for A.. xD
Original post by gameofno
Dude 0.75 is the right answer!


I got 0.0075

How did you get 0.75

I did 0.9m / 120 m/s
Original post by dRaGoN2509
LOL I went full retard and put cornea for A.. xD


Same!!
Original post by gameofno
Wait what do u mean why the heart rate at rest


It was related to the table, it was asking about why the mean heart rate at rest was different to the mean heart rate before exercise.
Original post by whyohwhyohwhy
I got 0.0075

How did you get 0.75

I did 0.9m / 120 m/s


You get 0.75 if you do 90/120.. I don't know which one is right because I don't know if you have to convert it to metres or not.

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