<p>in the uterus fsho</p>
<p>photoreceptors was located on the left side</p>
<p>it's at the back of the eyeball, but not the optic nerve</p>
<p>Beetle graph was one of the first questions, I meant to say the insect graph/decomposing tree question</p>
<p>insect graph was bell curve i think</p>
<p>For the insect/decomposing tree question, can someone tell me the reasoning behind the answer being a bell-shaped curve? Thanks~~</p>
<p>so at first, there were few insects. but the fallen tree provided food for the insects so they grew in number. but once the tree was decomposed, there was less food, so they started dying out</p>
<p>or that was my reasoning at least.</p>
<p>The answer was oxygen for the first one, b/c photosynthesis releases oxygen. Another question pertaining to this was about "which of the following would be true for an algae found at 500nm (or something like that. It was at the nm where the least photosynthesis was occuring, so the answer was "there would be little concentration of oxygen-seeking bacteria." For the highest photosynthesis abilities.. I put 400-450 nm, because it was at the point that the graph reachest its highest point.</p>
<p>The other question about this pertained to CO2, but I thought it asked for which color would produce the least CO2?</p>
<p>yeah, you're right about the CO2 one. it was least, sorry! there would be little concentration of oxygen-seeking bacteria, yeah i put that too! I put 400-450 nm, because it was at the point that the graph reachest its highest point. that's prolly right. i thought it would be the one w/ the greatest slope, so that's why i put like 600-650. i'm prolly wrong though.</p>
<p>thanks for those who are answering all my questions =)</p>
<p>My son took the bio this am and wasn't prepared for the questions about the eye. he said there were about 3 questions and he put "B" for all the answers. this makes me nervous. Pray tell , were any of the answers on the eye part "b".
Also how many answers do you have to get right to get a 700 he took Bio M?
Thanks!</p>
<p>I was deciding between bell curve, and linear negative slope for the insect one.</p>
<p>The bell curve has already been explained, but my reasoning for the linear negative graph was that the tree already contained a large population of insects at the time of falling, and as the tree gradually decomposed, so did the population. The question was too ambiguous I think, could've went both ways.</p>
<p>mindy: I don't remember which one was B, but the two structures at the front of the eye (iris and lens), were correct, along with the thin layer surrounding the back.</p>
<p>^ I also put the linear negative slope. </p>
<p>I understand the reasoning for the bell-shaped curve though. But I have a question. Why would the insects gain in population as the tree decomposed? Is it because more nutrients would be made available to these insects by the decomposers, and thus when the tree finished decomposing, these nutrients would be gone, and then the insects would die off?</p>
<p>Mindy: B was probably correct for one of the answers. (I remember the front of the eye being A and B)</p>
<p>Did anyone confirm an answer for the molecular question about restriction enzymes, was it complementary DNA?</p>
<p>Also for the vine questions, did you guys get the graph where the experimental group (dashed line) is slightly above the control group at the start of the graph?</p>
<p>
[quote]
I understand the reasoning for the bell-shaped curve though. But I have a question. Why would the insects gain in population as the tree decomposed? Is it because more nutrients would be made available to these insects by the decomposers, and thus when the tree finished decomposing, these nutrients would be gone, and then the insects would die off?
[/quote]
</p>
<p>A possible explanation could be that the freshly fallen tree offered a new habitat, which caused a population boom, but as it deteriorated so did the population. I put the negative slope graph tho, because it had a simpler explanation which I assumed the test makers mightve been looking for. Hopefully we're correct!</p>
<p>yeah it was complementary dna</p>
<p>i think i got that graph too for the vine question</p>
<p>
[quote]
A possible explanation could be that the freshly fallen tree offered a new habitat, which caused a population boom, but as it deteriorated so did the population. I put the negative slope graph tho, because it had a simpler explanation which I assumed the test makers mightve been looking for. Hopefully we're correct!"
[/quote]
</p>
<p>^ Ooh. Yes that makes sense, unfortunately ;/. </p>
<p>I'm pretty sure the answer to the restriction enzyme question was complementary DNA, because it's the only way the two cut DNA can pair together. </p>
<p>I'm also wondering about the vine graph~~ I put the one with the more dramatic difference though.</p>
<p>Do bicarbonate ions bind to hemoglobin?</p>
<p>No, they act as a buffer</p>
<p>^ Mhm.</p>
<p>
[quote]
Do bicarbonate ions bind to hemoglobin?
[/quote]
</p>
<p>Bicarbonate (HCO3) ions react with H+ Ions, thus acting as a buffer to resist changes in pH.</p>
<p>If I answered 65 questions, how many can I get wrong in order to get at least a 700? Do you think the curve is going to be big?</p>
<p>Also for the vine questions, did you guys get the graph where the experimental group (dashed line) is slightly above the control group at the start of the graph?</p>
<p>i thought it was the solid line (control) slightly above the dashed (experimental).</p>
<p>"
i thought it was the solid line (control) slightly above the dashed (experimental)."</p>
<p>I thought that too initially, but at hour 1 (or day 1, I forget) the dashed line is slightly higher than the solid, and after that the difference is much more dramatic.</p>
<p>Trying to get some more clarifications on the last 4-5 questions of the Core Questions:</p>
<p>The answer to the evolutionary order was: Echinoderms (starfish), Shark, Reptile (Dinosaure), and Bird?</p>
<p>Uric Acid: Bird and reptile?</p>
<p>Most related to primate?
^ What was the answer to this?</p>