I think you get all 3 regardless whether you put minus or not because it asked for change and it did change by 265.8 (ish, I don’t remember the exact value). If it asked that and then said state whether it decreases or increases then you’d get an extra mark for a minus sign as it decreased :smile:

Original post by Xx_InZain_xX

For the difference between 1988-1991 I put -265 or whatever value I got because the question said what was the CHANGE and it was worth 3 marks so in the mark scheme they may only allow the 3rd mark if you put the minus in. Not entirely sure though. I've seen that before on some old spec papers.

Reply 188

Waynetrain17

Yeah you did the right thing, not sure how strict theyll be on how you approximate the different points cos it was a bit of a guessing game. Cant remember what i got but it was a bit more than 170

Original post by Ameliakkmm

For the question about the tests for testostorone
Did anyone do something like 45000x0.017=765 for the year 1988 ad got 765 and the for the other year something like 85000x0.007=595
and got a difference of -170 between the two years?
PLease say someelse else did this??

Reply 189

Xx_InZain_xX

Original post by positivee

How much do you think it will be for an A star it can’t be above 80 right ?

I reckon this paper was similar maybe a bit easier than last year. I think the A* mark for this paper will be >76 as thats what it was for 2018 paper 1. But the overall boundary of 69% (last year I think) might still remain depending on the difficulty of paper 2 and 3

Reply 190

not_XIX_forever

I bet paper 2 is going to be a KILLER

OCR are usually ruthless :frown:

Reply 191

solissa

Wasn't the commercial uses question just auxins?

Original post by AMberrose1234

252 (I think) for the number of change in people testing positively
Noradrenaline and cortisol in the table
Atrioventricular value as the valve that shuts.
86 - heart rate
Photosynthesis - light dependent because needs the reactants of ATP and NADP to oxidase GP to TP
RuBisCo as the enzyme
Auxins - Rooting powder and weed killer in broad leaved plants
Gibberellins - seed germination
Anabolic steroids - steroids can cross plasma membrane that’s why can be applied to skin
Veins presents as arteries run close to the organs supplying them with oxygen
The multiple choice the cells were red blood cell and white blood cell

Reply 192

GraceTheTortoise

I’m pretty sure, if they wanted full names they wouldn’t have abbreviated to GP in the question

Original post by hannahrose25643

i did that too

Reply 193

NAJK7

Original post by Ameliakkmm

i did the same method but i put answer as positive. Can someone please say whether u had to put it as negative since it decreased from the first year to the next.

Reply 194

Abdulrahmankhan

Original post by sotor

i put destroyed since auxins collect on the opposite side to light, therefore they might have drawn the conc that auxins on the side of light were broken down

It was probably synthesised because they said it was thought but when they checked the level of auxins in plant in the absence of light it was the same suggesting that light does not make auxins if it was destroyed in the presence of light it would be less auxin when light was present.