usabo

Pre-College Topics High School Life
1

<p>who’s taking it this year?</p>

2

<p>i am. how did you prep?</p>

<p><a href=“http://talk.collegeconfidential.com/showthread.php?t=18875&highlight=usabo[/url]”>http://talk.collegeconfidential.com/showthread.php?t=18875&highlight=usabo&lt;/a&gt;&lt;/p&gt;

3

<p>i’m just reviewing all of the pictures in the book and doing the slew of practice problems i have. if you email ms. lowry, she’ll give you last year’s exams with detailed answers. </p>

<p>how about you?</p>

4

<p>gaaahhh open exam was hard. i think i missed a few. which is bad becaise im the biomaster and im not supposed to miss a few. :(</p>

5

<p>i took it.</p>

<p>that test was ridiculous. i probably only got like 10 of them right.</p>

6

<p>lol ya i feel like an idiot right now</p>

7

<p>im pretty ticked. ive read campbells 6th ed. three times and those guys went down to the nitty gritty stuff. eosinophils usually target larger organismal invaders like schistoma. who would have known? its like…uhhh…half a sentence in a tiny little paragraph in the whole “encyclopedia” that is campbells.</p>

8

<p>that open exam was so hard!
i don’t think i would have done any better even had i had the book with me.
what kind of a stupid question was that about the damned fish and their migration?</p>

9

<p>I crammed and it raped me.</p>

10

<p>how can you cram for an exam that covers all the teeniest details of huge book?</p>

11

<p>I read it in one night.</p>

12

<p>lol studying for the USABO is futile!</p>

13

<p>what about that question about the abiotic origin of life? i marked something about the oxidative atmosphere and complex ions, but i’m pretty sure it was wrong.</p>

14

<p>no thats right. the reason more new life isnt starting is because the earth has an oxidative atmosphere istead of reducing atmosphere like it was a long time ago.</p>

15

<p>i was really dumb, after the exam i went home a looked to see which ones i missed. the antibody one was IgE and you could have Schistoma organism in you if your eosinophil count is high (i think i put salmonella for that 1) and i missed that aspirin blocks prostaglandin receptors. i knew that one too but i was so nervous i could barely function. -3 usually means -9 though for me…lol so im just hoping for a 40+</p>

16

<p>hey there was a question on there that talked about urine concentrations and it asked which group of organisms is LEAST likely to use urine concentration as a form of homeostasis? and it listed Aves, Mammalia, Lepidosauria, and Testudines. i knew what each group was, but i think they all maintain different urine concentrations to maintain blood ion concentration homeostasis. i just put Aves because i had to pick one, i thought all of them did. i dunno…</p>

17

<p>Um… another option was the “bony fish” option. fish use urea, which isn’t concentrated at all. aves = birds use uric acid, which is very concentrated. so it should be (i think) the bony fish option.</p>

18

<p>yeah that was the other option. yeah they use a lot of osmoregulation so that could be right too.</p>

19

<p>Which questions did you all find difficult? I definitely was thrown off by the esinophil and antibody question.</p>

20

<p>the antibody question was relatively easy. the osmoregulation question was osteichthyes, i think. i missed the eosinophil one (marked HIV). where does it say that aspirin blocks prostaglandins? i got the migraine question wrong even though i knew the answer. and for the dogs isolation i confused geometric isolation with mechanical isolation. the drupe question was sheer luck and golden rice was wrong.</p>