-
We need your support!
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
Recent content by salma_69
-
Biology P51
anyways it's only 3 marks and i guess you get marks when mentioning using distilled or deionised water and stirring so if in case we lose or sth it will be 1 mark i guess hopefully -
-
Biology P51
ooops then i wrote something and explained sth else *facepalmed* i hope they go blind while reading this :/ the conversion part i mean is as i remember they said we have a 1 mgcm-3 subtilisin and we need to prepare different conc ranging from 20 ugcm-3 - 100 ugcm-3 i forgot doing this and just... -
Biology P51
oh yeah i did the same :D do you think we will lose marks for not converting -
-
Biology P51
i did the same but not the halfing method i made conc 0.8, 0.6, 0.4, 0.2 -
Biology P51
i even forgot to do this step i just did the normal serial dilution and used the formulae c1v1=c2v2 how did u do it -
-
-
A level Biology: Post your doubts here!
this might help https://www.xtremepapers.com/community/threads/biology-paper-5-tips.27105/ -
A level Biology: Post your doubts here!
specimen 07 :/ could the ms be wrong:confused: -
A level Biology: Post your doubts here!
the ms answers are too weird can someone explain plz part ii and iii -
-
A level Biology: Post your doubts here!
guys this question is about effect of temperature on oxygen uptake what is Q10=2 -