Edexcel A-level Salter's-Nuffield Advanced Biology Papers 1, 2, 3 (9BN0 01-03)

Second to last one was defo SAN because the wave of depolarisation starts there and is conducted. No SAN = no pump. The AVN isn’t triggered.

Last one was just how no blood supply = no oxygen= no aerobic resp = muscles need that to contract ATP whatever

Why would it have anything to do with AVN, AVN controls the ventricles not the atria?

I’ve got such “last exam syndrome” for chem. i just feel so burnt out. Gotta keep this momentum for one more exam. Ah.
You know that sinking feeling in your eyes. And your head feels heavy? Need a good nights sleep I think. No point in trying to do chem, it won’t go in atm

Hi

Does anybody know how many marks was that graph question to do with effect of substrate concentration on rate ?

Hi

Does anybody know how many marks was that graph question to do with effect of substrate concentration on rate ?

Does anyone remember the questions (and if possible answers) that were in the scientific article? I can only remember the ones about adaptations of chloroplast and how simple organic molecules are made.

What were you supposed to right about simple
Organic material question

It was about LIR

Weren’t u supposed to describe how GALP and GP is synthesised into organic molecules?

That’s LIR

But u have to describe how GALP is made into carbohydrates for example

Yes, and describing how GALP is turned into carbohydrates is LIR.

none of topic 1 came up
topic 4- plant fibres
topic 4-plant mineral defencies
topic 4-plant structure
topic 4-tensile strength
topic 2- cystic fibrosis and genetic screening
topic 2- membranes (membrane permebality)
topic 3-differental gene expression,epigenetics,lac operon
topic 2- transport mechanisms
topic 4-role of zoos
topic 3-protein secretion
topic 3-meiosis
topic 3-fertilisation
topic 4-hardy weinberg
topic 3-cell ultrastructure and microscopes
this is from what i can recall.

hi could you share these with me as well please?