<p>It obviously can’t be the children that’re from the same litter, so it must be the mothers</p>
<p>Yes, the children have to be from the same litter. If they’re not from the same one, everything is shot - the mother might have different birth patterns (super, super common), and that would void your whole experiment. Having them from the same litter is a necessary control. They would just be given birth two at different times in the given period.</p>
<p>@daesung, i agree with StudiousMaximus because the diet is exactly what contributes to embryo growth and the other choices (the ones that i remember) wouldnt make sense.
they cant be from the same litter because its testing 120 mice, not 1
they cant be taking different vitamins because that doesnt necessarily directly influence embryo growth and its not what the person was testing
anyway thats all that i remember and i chose the diet choice because it made the most sense to me</p>
<p>Hey guys, about the diagram of the amino acid question: I put 5 as the bonding site. This was my thought process. They way you make a peptide bond is through dehydration synthesis, right? And to do that, you need to remove an OH from one molecule and an H from another (OH + H → H20, essentially). The 5 bond is the one that is broken in order to remove the OH, whereas 1 (the other likely answer) is not directly removed - the N-C bond is unaffected. I’m pretty sure 5 was correct…</p>
<p>Just wondering, what says that a mother can’t give birth to 120 pups in the same litter? Rats are R-strategists, right? That matches perfectly with their type of thing…</p>
<p>@AstroBlue: I thought the same thing, but as you can see, ameyazing thought it was the children. Again, it’s a bit ambiguous because it only said “rats.” </p>
<p>Anyway, ameyazing, I meant to say a necessary constant. Constants are parts of the experiment that must remain the same to give accurate results. The diets of the mice must be the same to ensure consistent embryological exposure, so that was the right answer.</p>
<p>@ Aquawater, by slightly steeper, I meant its slightly more steeper than the experimental. So I guess in your words, the control is the sreeper one. Thats what i meant sorry if i wasnt clear ;)</p>
<p>Agghh there goes my 800 T_T</p>
<p>@ameyazing: Also, the mothers had litters around 10 pups (in the table), so your “120 pup” thing doesn’t make much sense.</p>
<p>You don’t need an 800 though. You need to remember the national average is 580 or so. Over 700 is great, over 750 is excellent. You have a great score either way, and don’t need to be perfect.</p>
<p>And guys so CFC doesn’t affect global warming much ?? 
because I remember as a kid learning that the depletion of ozone layer contributes to the global warming ugghh >.> -4 now :(</p>
<p>Yes, the answer to that question was an increase in greenhouse gases.
I got about the same score as you I think.</p>
<p>Well I guess this is what i deserve for only studying for like 3 hours the night before =.= I hate procrastinating :(</p>
<p>3 hours only!? Wow…That’s really impressive! You probably got a 780 or 790 depending on the curve, and you only studied 3 hours!</p>
<p>Well most of the knowledge was from AP bio but that was like weeks ago soo I forgot a lot xD Hoping for that 790 or 800 LOL if somehow I do get it xD since I took M section heard its more lenient?</p>
<p>was the question About the nervous system first responding in the M section?</p>
<p>^ yea it was.</p>
<p>and daesung, i actually heard the E is more lenient</p>
<p>The one about the chemical signal?? i think it was general</p>
<p>The neuromuscular joint was general, but the one that asked about which system responds first was M I guess…</p>
<p>M is more common for whatever reason (some people think it’s more prestigious with the harder curve, others are pre-med, etc.)</p>
<p>and CFCs & ozone layer are not part of global warming. it’s just a big fat hole in the sky that’s going to get bigger and let more UV in.</p>