Help!

[Zebra]

did you guys cover transpiration, stomatal responses and parts of kidney that are involved in osmoregulation ?
are these even in the study design :S

[HERculina]

nope nope and nope.
however im going to cover them briefly in case.

[scocliffe09]

did you guys cover transpiration, stomatal responses and parts of kidney that are involved in osmoregulation ?
are these even in the study design :S

transpiration and stomatal responses are related to C3, C4 and CAM plants, which were clearly on the OLD study design but are sort of ambiguously not-really on the current one. That said, I would recommend having an understanding of these concepts because they can be helpful in harder questions, e.g. in 2009 Unit 3 there was a harder photosynthesis question where a bit of extra knowledge was helpful.
osmoregulation is an example of a homeostatic (negative) feedback-response mechanism. You need to know ONE example of negative feedback - so if you want to know more, it can't hurt, but it's not necessary.

[Zebra]

So just one model aye?
definitely bgl model...

[lexitu]

Haha, blood glucose model is the best

[Zebra]

effector in bgl model... alpha and beta cells in the islets of langerhans (pancreas) or just liver and skeletal muscle?

[lexitu]

Effectors aren't alpha or beta cells because they are the ones detecting changes and releasing the hormone (receptors). So yeah they would be the liver cells or skeletal muscle fibres or other cells even but you can just give one along with the effect

[WINVCE]

Same, I saw people say alpha and beta cells foe effectors.
But now its clear