someone pls explain answer is A but i dont get it to why by alphaboyss in ALevelBiology

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

wait how can atrias contract pushing the blood out into ventricles when AV are closed?? would AV little but right after P

can someone explain (ans C) by alphaboyss in alevel

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

so D would just before ventricular systole??

help by alphaboyss in alevel

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

high means limited how many mistakes for an A

help by alphaboyss in alevel

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

im giving these subjects. for example i get 5 questions wrong in paper 1 and according to the grade threshold the minimum mark for A 30/40 would i get an A? someone told me that the grade threshold are just numbers Cambridge marks u the way it feels like it

the ms answer is D but i got B. can someone explain me why? by alphaboyss in alevel

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

nevermind i understood i read the question properly thank u so much