<p>LOLCAKES @ PRINCETON REVIEW for a Fail question. </p>
<p>Hyperventilation is the leading cause of respiratory alkalosis (the blood becomes too basic). Hyperventilation DOES NOT lower the blood pH (or make blood more acidic). </p>
<p>If you hyperventilate, you introduce more oxygen into your system and get rid of carbon dioxide. CO2 dissolved in the blood plasma to form carbonic acid. If you get rid of CO2, you have less carbonic acid, so your blood pH should rise (not drop). </p>
<p>Question 2 on page 134 of the 2012 PR AP Bio book.</p>
<p>–Edit–</p>
<p>Hmm … I found the author, Kim Magloire, on Facebook. She’s definitely the author of the PR AP Bio book; her profile information matches the biographical information provided in the PR book. </p>
<p>Can’t decide if I should PM her about the error … or friend her … or what.</p>
<p>IceQube, question: what’re you planning to do, after you take the SAT II, w/ all this info you have memorized? Are you majoring in something bio-related? </p>
<p>I see nothing wrong with the lines written about hyperventilation up there. Your logic is correct as well. You stated that hyperventilation drives CO2 (which would make blood acidic) out of the system, thereby increasing pH and making blood more basic. That’s what the author has stated as well. Hyperventilation would then lead to respiratory alkalosis, a condition in which the blood is too basic, so of course, the blood couldn’t simultaneously be acidic. Last line was just a restatement of what the author said.</p>
<p>Nope, it’s not what the author said. The author in the explanation directly states that hyperventilation helps lower blood pH, which doesn’t make sense. </p>
<p>From the PR 2012 book, verbatim: </p>
<p>Underwater swimmers hyperventilate before going under water and take deep rapid breathes in order to do all of the following EXCEPT</p>
<p>(A) increase the oxygen content of the blood
(B) decrease the urge to breathe
(C) decrease the pH of the blood
(D) blow off carbon dioxide
(E) increase the amount of carbon dioxide of alveoli air</p>
<ol>
<li>E Underwater swimmers hyperventilate before going under water and take deep rapid breathes in order to (D), blow off carbon dioxide, which (A), increases the oxygen content of the blood, which (B), decreases the urge to breathe, and (C), decreases the pH of the blood. (E), Hyperventilating decreases not increases the carbon dioxide content of alveoli air.</li>
</ol>
<p>This isn’t the first time Kim has failed either. </p>
<p>You quoted from the PR book originally, “Hyperventilation is the leading cause of respiratory alkalosis (the blood becomes too basic). Hyperventilation DOES NOT lower the blood pH (or make blood more acidic).”
Doesn’t the author state that hyperventilation doesn’t lower the blood pH? Hyperventilation → respiratory alkalosis → blood too basic, which correlates w/ your reasoning. </p>
<p>Btw, could you please put quotes around the author’s words so I don’t get them confused with your analysis?</p>
<p>You never answered my question: what’re you planning to do, after you take the SAT II, w/ all this info you have memorized? Are you majoring in something bio-related?</p>
<p>Nope, that wasn’t from the PR book. The author never mentioned anything about respiratory alkalosis. That was my explanation of why the PR book was wrong. This is what the author wrote.</p>
<p>I just did a dozen MCAT questions. Not bad. I only got two incorrect. The content isn’t out of this world difficult. </p>
<p>I really <3 the lab questions because I heard that the experiment questions on the SAT II Bio test were the hardest. The Kaplan MCAT materials have no paucity of experiment-based questions. Practically every question is experiment-based, lolz.</p>
<p>Anyway, you guys should be able to answer the below MCAT question. I’ve modified it a bit so I don’t violate any copyright laws, but the gist is identical. </p>
<p>*The transcription factor DD2 binds nucleic
acids with a high affinity. Radioactive DD2 would
most likely be found in all of the following organelle
preparations EXCEPT:</p>
<p>And lookie here! A 40 question MCAT “subject test”? No, not just one, but 3? Must take. I need to save all my real SAT II subject tests and AP Bio tests for the end.</p>
<p>I still can’t tell if you’re actually for real or not, but whatever. You’re insane, but I admire your dedication. It was torture for me to read through just the Barron’s book while studying for the AP exam, and it took me forever. Sit me down in front of a history textbook and I could read for hours, but eutrophication, immune system, action potentials? Just not my thing…</p>
<p>Anyway, even though you’re freaking out over what will amount to a very very small part of your college application, I’ll admit there’s something vaguely admirable here…</p>
<p>I’m not being real. I wasted several hours of my life typing up all this crap just to fool you guys, because I’m that messed up. I made up the names of all the books. </p>
<p>:rolleyes: </p>
<hr>
<p>Anyway, I completed all three of the MCAT topical tests, and I missed 11, 12, and 11 questions respectively. Not bad for a test designed for college sophomores/juniors. </p>
<p>But still not good enough for me. I really need to start memorizing the parts of the brain and their respective functions. I need to memorize the hormones, where they originate, and what they target/what they do. When I heard that biology was all memorization a year or so ago, I thought it would be a piece of cake - I’m good at memorization, right? Turns out, I’m not good at memorization. Or just not good enough.</p>
<p>why would you take mcat practice tests for the SAT Bio? that’s just unnecessary. The test isn’t difficult, considering a person you think of as stupid and dumb (me) got an 800, and that an 800 only puts you in the 90th percentile.</p>
<p>OP, don’t let haters discourage you from being passionate about Bio (if you are, that is), but know that SAT Subject Tests tend not to be given as much weight as GPA, SAT and ACT scores, extracurriculars, etc. They’re really more of a satellite factor in admissions - a little less important than APs.</p>
<p>Thank you emberjed for injecting a second voice of rationality into this thread. Biology is my passion. I cannot imagine spending my summer any differently than how I am spending it right now - studying biology. And I might just enter a biology-related major in college. This studying will prove invaluable then; while everyone else is being hammered by new material, I’ll just be chilling.</p>
<p>I’m also interested in participating in the Biology Olympiad in my senior year. Sure, it won’t make it on my transcript, but the ability to go to foreign places (I believe that people who advanced to a certain level got to go to Singapore last year) is something I look forward to :).</p>
<p>Hahaha so I just took my first SAT II practice test (from the PR book) and I bombed it. I’m not even going to try to calculate my scaled score. I think it was a combination of </p>
<p>a) being tired (I took it around 9 PM)
b) not reading the questions carefully (I missed at least one “NOT” question because I wasn’t paying attention)
c) getting impatient and not bothering to double-check the questions</p>
<p>No excuses though. I’m going to go through the test and make sure to ace every test from now on.</p>
<p>@IceQube: You have some really great material (how were you able to afford all of that??) and I’m sure that, combined with your knowledge, the review books will give you an 800 on the SAT Biology!</p>
<p>I’m also studying for the SAT Biology, but I’m taking an AP Biology class this coming fall. Do you have any advice about the SAT Bio exam? I read some of the stuff you wrote, but I just wanted to know a little more. Thanks!</p>