<p>What’s the difference between Norepinephrine and Epinephrine? Is it :“The only difference is that norephinephrine from a sympathetic neuron is only present for a few milliseconds while norephinephrine and epinephrine from the adrenal medulla are present in the blood alot longer.” Or is it that Epinephrine’s effects last longer than Nor’s all the time?</p>
<p>And what’s an Amine Steroid?</p>
<p>Thanks :).</p>
<p>Epinephrine …
<p>norepinephrine
<p>Amine Steroid …
Amine = Amino … which is a functional group with nitrogen in it. Steroid is a lipid/hormone type thing.</p>
<p>Thanks- also does anyone know if we have to know Vitamins (like Each one and it’s effect) for the Sat2bio or just what a vitamin is? Thanks,</p>
<p>Uh…just what a vitamin is (aka organic coenzyme). I guess it wouldn’t hurt to know the functions of some major vitamin groups, but I doubt it’d come up in too much detail.</p>
<p>well in the barrons book it says em and they were in a few practice tests so it wouldnt hurt to know at least bascic stuff like
Vitamin A : From Carotene Pigments of leafy plants (or someting like that) ,used to form visual purple in retina, which has todo with vision (duh), </p>
<p>Vitamin B complex: lots of different vitamins i doubt they are imp , (Niacin is one of em)</p>
<p>Vitamin D: From UV rays , absorobed by skin…etc…</p>
<p>Vitamin E : …(kind of forgot)</p>
<p>Vitamin K : blood clotting </p>
<p>Also fat solube vitamins are A,D,E AND K</p>
<p>Actually Norepinephrine/Epinephrine are both released by adrenal medulla, but norepinephrine is also used as a neurotransmitter. In hormone form, it also, unlike epinephrine, mainly acts to maintain a heightened blood pressure. Furthermore, the noradrenaline released at the synapses are quickly broken down by enzymes in the proximity of the synapse. The norepinephrine released thus acts as a long lasting version of the neurotransmitter.</p>
<p>That’s the ticket ^. I just read PR and it had the exact same explanation, thanks alot Lil Bandito =p.</p>
<p>" but norepinephrine is also used as a neurotransmitter"
so is epinephrine…</p>
<p>vitamin C - helps make collagen. Defiency of this vitamin leads to scruvy.</p>
<p>Do we need to know the specifics of the Nephron (as in what gets absorbed when and all thestuff going in and out and every part of the tubule) or do we just need to know the concept generally?</p>
<p>keep in mind that there are only 80 questions on the test and use your best judgement (some topics there are probably going to be more questions) best if you knew everything though (if you have the time)</p>
<p>You should know what gets absorbed and where, as well as the names of each part. Unlabeled diagrams and such are on the test, and the only way to really get those questions is to know the structure and names of the parts.</p>
<p>uh, I took the May SAT bio and it never went this detailed. Or if there are such questions, you can usually guess your way through them.</p>