Edexcel GCSE Biology B1 12 May 2015

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Ok, I am going to use my knowledge to predict that the 'vas deferenes' does not develop properly? I sure hope you got it right... I know the whole of topic B1, every symptom of CF... no knowledge of mucus is involved whilst explaining the infertility of males within the disorder.

Vas deferenes was not the correct answer but may be accepted on the MS. I doubt anyone in the country wrote that, but the question itself it was logical and many A* students including me wrote that mucus would trap the sperm duct.

Reply 281

Dudeyoufugly

Original post by Chakara

I wrote that energy is lost through excretion and respiration

oh i was on about the grade boundaries not the questions

Reply 282

queenleelee

Original post by multieman

Ok, I am glad to know that you are an A* student - you are acting like I am not? I wrote exactly what you said - it was an educated guess, but it is wrong. The real reason is to do with the vas deferenes, unless you have a medical degree - I am not considering that it is not.

Reply 283

HarryKane28

Original post by SparklyN

Okay, can you please tell me the answer for the bar thing where you had to describe the ph of the organisms?

I wrote that if there would be low ph- bad indicator of water pollution would be there, something like that. 0.0

It was as simple as saying, the lower the pH, the lower the amount of organisms in the water...

Reply 284

kirsty123456

Original post by Fatemah99

Id say around about 4, as it was out of 6. 1 mark is awarded for the way you've written your answer, and your small mistake would have only cost you 1 mark

I wouldn't really say that's a small mistake.. They got it completely wrong as glucagon and glycogen are completely different things. If ou can only lose 1 or 2 marks for not showing you understand the topic then something is not right with the marking system..

Reply 285

yukicookie

Original post by kirsty123456

I agree. I remember a past paper once about glucagon, and the ms said "reject glycogen and spelling of glucagon with a 'y'"
Understanding the fact that glucagon is a hormone and glycogen is how glucose is stored is very important in this question. You might only get 2 marks for that (if any).

Reply 286

Usaamah

Original post by Chakara

Yeah it was dendron and nucleus

Some people were saying it was dendrites but I thought they were the smaller branches off the bigger ones. The arrow pointed to the larger ones.

Reply 287

ayodejiaraoye

I put that only certain organisms can live in certain lakes due to the fact that some pH levels are too strong for some organisms meaning that they wouldn't be able to survive.

Reply 288

ayodejiaraoye

for the percentage question,,, I got 92%,,, is that correct?

Reply 289

Teegan2323

Original post by samirsheth

What was the answer to the cystic fibrosis infertility question?

I got the answer wrong, but my teacher said it's to do with the mucus.

Reply 290

xx_lofsuburbia

Original post by ayodejiaraoye

for the percentage question,,, I got 92%,,, is that correct?

Yes

wow! that was easy

Original post by A*GLORYHUNTER

wow! that was easy

did you put electrical energy instead of dc on the c1 paper

Reply 293

A*GLORYHUNTER

Original post by HarryKane28

did you put electrical energy instead of dc on the c1 paper

yeah i wrote dc then crossed it out and wrote elerctrical

Reply 294

ziddy

is it possible for edexcel to remove questions on the b1 gcse paper e.g the cf infertility one please reply

Reply 295

mayamiami

Original post by kirsty123456

Does anyone know if there is a thread for the C1 exam tomorrow? Or does anyone want to give me tips about possible 6 markers?

how did you find it?

Reply 296

Serkan Marasli

Original post by ziddy

is it possible for edexcel to remove questions on the b1 gcse paper e.g the cf infertility one please reply

My school said that they were going to contact Edexcel and ask them to remove it as it wasnt in the syllabus. If enough people contact them, they will remove it.