<p>for the crab question, does anyone remember what they put for the question regarding why the crabs lived in two different habitats (mud and sand)? the two likely answer choices were about substrates and density</p>
<p>@WhiteTopaz
But doesn’t pine trees grow in a well-drainage soil?
I didn’t see anything about pine trees in Barron’s…</p>
<p>I put substrates because I convinced myself that different substrates meant different ground conditions. Not really sure though, I was debating.</p>
<p>i chose the burrow choice, but i guessed haha</p>
<p>That marsh question was kinda confusing. I ended up putting the substrate choice</p>
<p>1., vitamins question: humans cannot produce and need to bring in from outside
2. marsh or mud or sand question: substrate. substrate can also mean the interface on which cells grow in or on (in this case the beach mud or sand)
3. pine tree: less evaporation answer choice
4. calcium parathyroid question: the graph was inverse relationship. as calcium increases, hormone decreases, or vice versa.</p>
<p>I left the test feeling pretty good, but after reading this thread I’m starting to doubt myself lol. </p>
<p>For the question about what scientists can do with the whole mitochondria have their own dna thing, was the answer that they can compare mitochondria dna of different species?</p>
<p>Glycogen is stored where?
What is the majority of a plants life spent as?
What was the"which one was false" about the 44 autosomes?
Question about chitin without chloroplasts, fungi or ciliates?
Stem cell is used for what?
Acid deposition results primarily from what?
Gall bladder question, cut sensory or motor?
Which was not true about placetal and marsupials?
Studying mitochondrial dna helps scientists to find what?
The illness in the tomato was a virus or bacteria?
Main similarity between angio and gymnosperms?
Pcb, how did it affect the eagles with embryo development problems?
Predicted pattern of species is succession?
Biological magnification or industrial melany?</p>
<p>@yjkimnada
humans can produce vitamin D in their skin…
Also, pine trees grow well on rocky soils rather than wet soil</p>
<p>Glycogen is stored in liver.
Majority of plant life is sporophyte.
Autosome one, I believe it was something about how only girls have X’s? Something like that.
I put fungi for the chitin one, not sure.
Stem cell was the I and III, I think. To grow new organs, make a bunch of cells really fast.
I put fossil fuels for the acid deposition one.
Gall bladder, completely guessed lol. I put the blood cells one, I believe. I just remember something about the gall bladder recycling red blood cells, idek.
Not sure about placental/marsupial. I put the one about embryo in a sac. Probably wrong?
Mitochondrial DNA, I put compare between species.
Illness in tomato, virus?
Those last ones you put are Ecology section I’m guessing? I don’t remember those, I did molecular. :)</p>
<p>@ wlsnehf “Many south-facing ridges of the mountains of the Western U.S. have a lower treeline than the northern faces because of increased sun exposure and aridity.” wikipedia says so. I think this was already said by a previous poster, but this was mentioned in a barrons book too.</p>
<p>Also, I remember the question being about majority of vitamins or most of the vitamins. The answer choices I remember were:
humans cannot produce vitamins
all animals need the same types of vitamins
all vitamins have similar structures
vitamins are only effective in large dose</p>
<p>Animals have different vitamin needs; vitamins have VERY different structure (look it on google images or just google); Vitamins are micronutrients, mostly needed in small amounts. So what we ahve left is that humans cannot produce vitamins, which is true since vitamins are foreign coenzymes.</p>
<p>@brown4colelge
Everything i have is same as yours. Almost
I thought that separate mitochondorial dna was about the endosymbion theory. So I chose the answer choice with something about the evolutionary history of eukaryotes.
And I thought that the gallbladder one was sensory neuron. It has to be something concerning a neuron and we know its not motor since a gallbladder is not a mechanical limb. We do not know anything about the other twwo choices of cutting of taste or smell since nothing else seems to be specified. So sensory neuron encompasses either one and I thought that was best?</p>
<p>To add to browncollege’s:</p>
<p>The autosome was an EXCEPT question I believe, pretty sure the right answer was “Only girls have X’s”
I put fungi too, not sure if that’s right
For the gall bladder I put sensory, since cutting the motor nerves won’t test anything that has to do with the signal being sent.
I put seeds for the angio/gymnosperm question, guessed on that one.
The answers to the last two were succession/biological magnification, Princeton had a REALLY similar question (actually, there were 3 questions in E that were almost the exact same question, and one that was exactly the same).</p>
<p>@yjkimnada
yes, I know that too, BUT the question asked specifically about ‘pine trees.’
And I read through the thread for October 2011 Bio Test, and the people reached consensus on the rocky soil one… But I’m still not completely sure which one is correct, coz both seem to make sense to me. (The key to this question is knowing that pine trees are in taiga)
Here’s the link: <a href=“http://talk.collegeconfidential.com/sat-subject-tests-preparation/1143249-may-2011-biology-e-m-23.html#post12589652[/url]”>http://talk.collegeconfidential.com/sat-subject-tests-preparation/1143249-may-2011-biology-e-m-23.html#post12589652</a></p>
<p>And for the vitamin one, I think the correct answer should me ‘animals need the same vitamins’ because although they need different amount for each, they still need all the ones that humans need, according to my research… (Noone seems to get this question right)</p>
<p>@yjkimnada
Yeah, for the mitochondrial DNA one, I was going between the comparison choice and the eukaryotic one. I ended up choosing the comparison between organisms one because that’s like an ongoing tool that can be used for research, comparing different mtDNA sequences between species, while the eukaryotic one is kind of already known now, you know? Ahhhh, so confused about that one. 
And yes, you’re probably right about the gallbladder one. I got kind of tripped up on that question, should have thought about it more.</p>
<p>Hey guys, just got back. Ok, overall I felt pretty good about it. I took M.
There was an interesting glitch on my test book. For the core section of biology, the title said Biology E. It also said this for the E specific section obviously. It said M for the molecular section which is what I took. Did anyone else notice this on their core section. It should have said E/M or something because during the core section I freaked out and thought I was working on E specific.</p>
<p>yeah i also noticed that</p>
<p>For mitochondrial DNA it was determine evolutionary history of eukaryotes or something like that.
I put evaporation for pine trees one
If parathyroid glands removed, PTH would go down, calcium would go down, and if calcium was at 50%, body would do stuff to increase it.
I put substrate thing for crab question.
Anyone put phosphate for bedrock in beginning of test
I had sporophyte for two answers in beginning
Was it DNA sequence or embryology to test if crabs are different species?
Was it anaphase or prophase for colchicine one
For marsupials, the answer to the NOT question was complete development before birth since marsupials complete development in the pouch after birth</p>
<p>I put cut the motor neuron to gallbladder. Motor neurons don’t just affect voluntary motion. But I’m not sure. Anyone else put cut motor?
I put 1/16 for a mendelian question. For M lab, I had rRNA as two answers. For Hox gene question, I put II only. One answer I remember for 38 differences was bacteria and corn have different genes than humans and may be different from each other. Not sure about animal vitamins, I put they have to obtain from environment. Virus for tomato illness just because it was the smallest. Wasn’t sure what they meant by fine filter. Is that a formal term? Put burning of fossil fuels for acid precipitation.</p>
<p>I think I put phosphate for the bedrock one, was the rest of the question something about energy?
Also had sporophyte for two, was a bit worried about that one
I put DNA sequencing for the crabs since that’s probably more accurate than embryonic development
I guessed anaphase as well, made sense to me at the time since those fiber things (I assume they’re microtubles) pull the chromosomes to the side
Damn, I just looked it up and you’re right about the marsupial question, apparently they have a relatively short gestation period.</p>
<p>Does anyone know the curve for 800? Apparently, it is better than the one shown in the blue book… some ppl say they got 800 with -5 raw score or something</p>