anyone doing edexcel igcse Biology January 2018.

Uh.... I just wrote 0... I dunno...
wasn’t prepared for maths
That was a really unfair question, never had anything like that in practise

The probability question is fairly common. It's just that they specifically mentioned 'male' this time. Don't you have maths A or b??

in regards to the biology (as the thread is about that paper), it was pretty hard and i didn’t know how to do the probability of how many children who are born will have the disease. the motor neurone was okay - usually for those types of questions, you just need to be able to draw the cell and give three labels in order to attain all of the marks x

The motor neurone is in the textbook and i think i saw it in past papers. How was chemistry tho? What did you guys answer for why only 15% of hydrogen and nitrogen reacts???

Yeh but this wasn’t a normal cell
I only managed to label the nucleus

I guess you were just flustered then. It's fine. It was only worth 1 mark anyways. Are you giving physics today?

the probability was 1 by 2...BT I wrote 1 by 4 (not sure which one is right, most probably it's gonna be 1by 2).
Neuron questions were damn easy..that kind of questions repeat alot

in regards to the biology (as the thread is about that paper), it was pretty hard and i didn’t know how to do the probability of how many children who are born will have the disease. the motor neurone was okay - usually for those types of questions, you just need to be able to draw the cell and give three labels in order to attain all of the marks x

what do you think that the grade boundaries are going to be like for biology?

Hey. Wasn't the probability 1/8 because probablility of male child (1/2) multiplied by probability of dd(1/4) is 1/8???

So I did the paper on Tuesday, 09/01/18, and found the paper really good. I agree with a lot of some of y'all are saying. There was certainly more diagrams to draw this year than any other year. This also goes for Physics but that's not I'm gonna talk about. I found the paper simple. It mainly asked straight-forward answers. In order to prepare for the paper, I did a bunch of past-papers. The key is to know what the question is asking. The Mark Scheme of past papers allowed me to identify this and allowed me to give all the key points as well.

Regarding the probability question, the answer is 1/8. The probability of a male child with the disease was 1/2*1/4. 1/2 because the probability of the child being male was 1/2 and 1/4 because it in the phenotypes, the chance of an offspring with the disease was 1/4. You had to multiply them and hence, the answer was 1/8. Please reply to me if you wanna discuss more about the papers, i'll be more than happy to answer.

I have also done the Math, physics, and chemistry, so if you wanna discuss them, let me know.

Just gonna add, on monday, (15/01/18) I have 2 papers lol. Biology paper 2, and English A paper 1.

hey that number of orbits taken by the moon question in physics..?did u do that?