<p>got a 122 and didn’t make finals</p>
<p>hey what was the highest possible score? 150?</p>
<p>probably around 200 because most part B questions were 2 points each</p>
<p>does anyone else have their score?</p>
<p>i’m highly doubting that the overall score was 200, despite what it was supposed to be. </p>
<p>what was the cut off?</p>
<p>Is the website supposed to say the cutoff somewhere? Definitely above 122, though.</p>
<p>From the website:
The Semifinal Exam was worth 237 points with an average score of 90.005. The highest score was 169. Students who scored 134 and above qualified for participation in the National Finals at Purdue University.</p>
<p>I got 126…missed by 8 points…</p>
<p>Where did you find the info again (could you post a specific link)? Did anyone on CC get that 169 btw?.. Oh and does anyone know the weighting this year? (How many points per section?)</p>
<p>I am assuming that it was originally 60 points for Part A, 120 points for Part B and 60 points for Part C. Since the total score is 237, i am assuming one question in Part A and one question in B were disqualified… </p>
<p>The info is on the teacher’s resource center.</p>
<p>They put a lot more emphasis on C then I expected … which wasn’t a bad thing I guess…</p>
<p>Do our teachers receive our scores?</p>
<p>Your teacher gets a list of scores with every student registered under his or her name.</p>
<p>I got an 88 lol. I did no studying since the open exam.</p>
<p>123 for me…didn’t study much at all. College decisions were released the day before I took the Semifinal, so I didn’t get to read the chapter on the endocrine system like I had planned. And then that one table shows up on Part C >.<</p>
<p>I got a 128. So close! Not bad for leaving the gas questions in Part C almost entirely blank. Still, those tiny choices I made about when and what to study weigh heavier on me now than they did before I knew that I was only a few questions away from qualifying. Oh well, I still have a shot next year.</p>
<p>Congratulations to everybody on CC who qualified for Finals! You all have my admiration for doing such a great job on these tests. Represent us well!</p>
<p>When and where is the list of finalists posted?</p>
<p>It’s on the usabo-trc site now.</p>
<p>Hey, guys! I have 3 questions in the Cliffnotes exercises on the Animal Form and Function chapter. It’s page 203 onwards if anybody is interested.</p>
<p>2) All of the following are examples of countercurrent exchange EXCEPT:</p>
<p>A. movement of blood through the legs of wading birds
B. movement of blood through the fins and tails of marine animals
C. the loop of Henle in the nephron
D. gas exchange in fish gills
E. gas exchange in human lungs</p>
<ul>
<li>The answer is E. I understand that extremities in animals like a moose or bird that stands on icy places would have countercurrent exchange in those places in order to keep the area warm. I also understand that fish use countercurrent exchange, because since water has much less oxygen than air, they need a very efficient system for oxygen/carbon dioxide transport. But why wouldn’t a moose’s lung for example have countercurrent exchange as well? I keep thinking about this and find no reason why it could be bad.</li>
</ul>
<p>9) In some areas of the human circulatory system, arteries branch into capillaries, merge into veins, then branch into capillaries a second time, before merging again into veins and returning to the heart. All of the following organs are found in such double capillary bed circuits EXCEPT:</p>
<p>A. the anterior pituitary gland
B. the glomerulus
C. the hypothalamus
D. the liver
E. the lungs</p>
<ul>
<li>The answer is E, and I have no idea why.</li>
</ul>
<p>18) Which of the following would be activated first
in response to a body cell that has been invaded by
a virus?</p>
<p>A. Cytotoxic T cells
B. Natural killer cells
C. Antibodies
D. Macrophages
E. Neutrophils</p>
<ul>
<li>The answer is A. I did this correct because since the question stated the word “activated,” it would have to be either a B cell or a T cell and other leukocyts were nonspecific, then A was the only fit. The explanations in the book made no sense though: “As part of the cell-mediated immune response, cytotoxic T cells would attack the abnormal body cell first. Once the abnormal cell is lysed, nonspecific attacks by macrophages and other phagocytes would occur.” I didn’t read anything about order, though.</li>
</ul>
<p>Thanks in advance!</p>
<p>For the first question, your problem is that you’re asking “why” with regard to an evolution question. Human lungs don’t have countercurrent flow. Why? Well, why not? There’s isn’t a reason for it. It just is. Evolution is random. You say you can’t think of a reason why it would be bad. I can’t think of a reason why it would be bad for humans to be able to photosynthesize.</p>
<p>@cadaeibfed: ur answer sounds a bit mean, but it actually helped lol. thanks!</p>
<p>guys, i nedd some help with this question it’s no. 45 in the first practice exam in cliffs ap book:</p>
<p>Which of the following is the dominant reaction as
blood flows through the pulmonary capillaries?
(Hb = hemoglobin)
A. H2CO3 → H+ + HCO3
B. H2O + CO2 → H2CO3
C. Hb + 4CO2 → Hb(CO2)4
D. Hb(O2)4 → Hb + 4O2
E. Hb + 4O2 → Hb(O2)4</p>
<p>I don’t get it at all? can somebody please elucidate it for me? thanks!</p>
<p>ok guys, i figured the answer out. i forgot to put the answer. it’s E. thanks! I do have another question, though. it’s number 75 in the same practice test: <a href=“http://i49.■■■■■■■.com/2hedqb5.jpg[/url]”>http://i49.■■■■■■■.com/2hedqb5.jpg</a></p>
![http://i49.■■■■■■■.com/2hedqb5.jpg[/url]](http://i49.tinypic.com/2hedqb5.jpg%5B/url%5D){kind=link}
<p>The answer is B. Why is B wrong? the explanation says it is at equilibrium at 14 minutes. i don’t get this.</p>