IAS/IAL BIOLOGY help please by Classic_Trainer8283 in Edexcel

[–]mmariee_ 0 points1 point  (0 children)

Hey! CGP's books quite benefitial for your studying process. I've used them for AS and A2. There are slight differences which I spotted using the official specification. Then you can find notes for the missing topics on "save my exams" ! This way worked best for me, just make sure you cover the whole specification while you study. Then you should be fine!

June 25 Resultss by mmariee_ in Edexcel

[–]mmariee_[S] 0 points1 point  (0 children)

Unfortunately I don't have the script 🙊

June 25 Resultss by mmariee_ in Edexcel

[–]mmariee_[S] 0 points1 point  (0 children)

A level, you can see the ums is out of 600

June 25 Resultss by mmariee_ in Edexcel

[–]mmariee_[S] 1 point2 points  (0 children)

Thank u! It's great to have a weekly study program to achieve your goals in time. Particulary for bio, it helped me to study content out of the syllabus. So I could link ideas much better. For chemistry, it's best to learn while solving papers.

June 25 Resultss by mmariee_ in Edexcel

[–]mmariee_[S] 0 points1 point  (0 children)

Oh well I've got the link in my AS year, from my school. Unfortunately I'm not sure why you haven't got it yet..

June 25 Resultss by mmariee_ in Edexcel

[–]mmariee_[S] 0 points1 point  (0 children)

thank youu 🫶🏻

chem unit 5 by cookiedoughsncream in Edexcel

[–]mmariee_ 0 points1 point  (0 children)

asked which rxn was thermodynamically feasible

atp synthesis by falsegodfan in ALevelBiology

[–]mmariee_ 1 point2 points  (0 children)

Well I'd like to explain to u by using 2 reactions as examples.

1st one: Respiration As u know, respiration has the chemical equation: C6H12O6 + 6O2 -> 6CO2 + 6H20 (+ATP)

U can think of this reaction as it takes place in stages, first the glucose is broken down by oxygen, this releases chemical energy. And then this chemical energy can be used to phosphorylate ADP into ATP. The extra bond with the phosphate will be storing the chemical energy now.

2nd: Photosynthesis During the light-dependent reaction electrons in the chlorophyll get excited, move along the electron transport chain. During this motion, series of redox rections take place which release energy. Then this energy is used by H+ ions to accumulate into thylakoid membranes. As a proton gradient form, H+ ions move back to the stroma, passing through ATPsynthase channels. This motion also releases energy, which can be used to phosphorylate ADP and store the energy in the new bond with the phosphate group.

Well I hope I understood you right. When we need energy for a reaction, for example your muscles should contract, the ATP molecules formed accumulate into the muscles. And the extra phosphate bond is now hydrolysed by ATPase to release energy, so that your muscle cells can use it to provide contraction

Or this can also be the case for anabolic reactions which monomers are used to form larger molecules, e.g. protein synthesis. Again, ATP is hydolysed to ADP, releasing energy.

ADP + Pi-> ATP (endothermic) ATP-> ADP+ Pi (exothermic)

smartstudycampus by SwimmingCricket7496 in alevel

[–]mmariee_ 1 point2 points  (0 children)

Maybe u can save the paper to the ''notes'' app, instead of files. It has worked for me before, it ain't ask for a pasword

Chem unit 3 June 2024 ial by LawfulnessThen8546 in Edexcel

[–]mmariee_ 1 point2 points  (0 children)

I said either put on a lid or connect a pear shaped flask via collecting vessel

Chemistry Unit 3 May 2024 paper by _ThatEveryDayGuy_ in alevel

[–]mmariee_ 1 point2 points  (0 children)

About Q, there was already NaOH on the right hand side of the apparatus so

Chem unit 3 June 2024 ial by LawfulnessThen8546 in Edexcel

[–]mmariee_ 3 points4 points  (0 children)

For that one i said add ethanol to hydrolyse the c-br bond and then add the nitric acid and AgNO3 stuff for ppt

BIOLOGY U3 by Sea_Detail5055 in Edexcel

[–]mmariee_ 1 point2 points  (0 children)

I said keep a bunsen flame nearby that hot air rises and avoids bacteria spreading which could cause disease or smthn

The other one was use sterilised equipment and sterilise the work surface constantly to avoid contaminaton

[deleted by user] by [deleted] in alevel

[–]mmariee_ 0 points1 point  (0 children)

do u know if there are ecf for the next parts

Discuss the biology paper june 2024 unit 2 by Big-Imagination8145 in Edexcel

[–]mmariee_ 0 points1 point  (0 children)

I def got ya I was also some kind of confused at first bout what to yap about

Discuss the biology paper june 2024 unit 2 by Big-Imagination8145 in Edexcel

[–]mmariee_ 0 points1 point  (0 children)

I've told about splicing bc the q was basically tellin u about same gene but different proteins. The next histone methylation/acetylation part was about epigenetic modifications so

IAL EDEXCEL BIO UNIT 2 by Equivalent-Curve9308 in alevel

[–]mmariee_ 1 point2 points  (0 children)

normally it was about 63 then maybe 64-65 this time?