<p>sent it to simfish</p>
<p>stoooopid semis!
it’s the usabo trap: lure the poor competitors into thinking that it’s easy, never realizing that that means that the cutoff will a perfect score!</p>
<p>if everyone’s taken them, we can torture ourselves again with the List All of the Questions and Answers Game!</p>
<p>Lol, we should do that eventually. However, maybe we should give it a few days? For example, even though the AMC has a deadline, I think that they ask that the solutions not be discussed for several days. Maybe we can try to compile a list sometime toward the end of next week?</p>
<p>Let’s give it a few days.</p>
<p>…and yea, the cutoff will be insanely high (not at all like the 52% required to get past prelims)</p>
<p>Wow, 52% was the cutoff? That was my score exactly (26).</p>
<p>Anyway, I suck at bio, and I thought a lot of the semis was easy.</p>
<p>does anyone know when the semifinal results are posted?</p>
<p>i put in a prayer with most major deities, so there’s no way i’ll lose.</p>
<p>Alright, that’s enough time. Pea_Sea, Adidasty and anyone else: lets start posting answers.</p>
<p>In no discernable order whatsoever:
MULT CHOICE:</p>
<p>Disulfide bridges are formed in the cytoplasm
[Random Hardy-Weinberg junk]</p>
<p>SHORT ANSWER:
Brain Development: Forebrain = Diencephalons, Cereb[r/ell]um, Midbrain = Midbrain, Hindbrain = The other two</p>
<p>Picture of Intestine:
Goblet Cells = White spots
Lumen = White Space
Outer layer = Longitudinal Muscle
Inner Layer = Circular Muscle
?=? [I can’t remember the last thing]</p>
<p>Hey everyone.</p>
<p>I’m really interested in getting the Bio Olympiad at my school because I want to go into bio but I have no idea on the format or difficulty or anything.</p>
<p>Are there any websites out there with sample tests or past tests? Or if not, could you guys list a few examples that you have seen.</p>
<p>it’s been a while, so i don’t remember too well.</p>
<p>multiple choice, here we go.</p>
<ol>
<li><p>island biogeography
small island more extinction less migration less species</p></li>
<li><p>inner ear balance
utricle, saccule, circular canals</p></li>
<li><p>K secretion in nephron
proximal tubule</p></li>
<li><p>coefficient relatedness aunt and nephew
.25</p></li>
<li><p>removing carnivore from ecosystem
increase herbivores decreased vegetation</p></li>
<li><p>respiration
rib cage expands diaphragm contracts</p></li>
</ol>
<ol>
<li><p>removing carnivore from ecosystem
increase herbivores decreased vegetation</p></li>
<li><p>hitchikers’ thumb hardy-weinberg
100</p></li>
<li><p>amino acids phosphorylated by kinases
serine and threonine (not sure about this one)</p></li>
<li><p>tree bark
organic materials cannot be exchanged between leaves and roots</p></li>
<li><p>plasmodesmata similar to gap junction</p></li>
</ol>
<p>pretty sure pea_sea is right on all those (except 9, i dont remember) and 10 is right (three proteins phosphorylated by kinases are serine, threonin, and tyrosine b/c of OH group).</p>
<p>I think I ended up getting between 20-25 out of the 35 MC. I got my ass kicked on short answer. Left a whole lot of stuff blank. oh well.</p>
<p>Scorcher, what does an OH group have to do with phosphorylation? Anyway, continued:</p>
<ol>
<li> Blood velocity graph: Velocity lowest in the capillaries</li>
</ol>
<p>hey can you guys email me last years semis also? <a href="mailto:kirbywamu@gmail.com">kirbywamu@gmail.com</a></p>
<p>ono, there were two graphs for #13 with velocity lowest in the capillaries: one that dipped down and rose back to the same height, and another that dipped down but didn’t go back up quite all the way. </p>
<p>which was it? i chose the latter.</p>
<ol>
<li>according to the biological species concept, which are species?</li>
</ol>
<p>i chose all for this (mechanical, habitat, and behavioral isolations) but i’m not too sure.</p>
<p>I believe I chose the latter graph as well. </p>
<p>And for your 14, I put just mechanical, because the audobon guide has changed species names due to the fact that different-colored birds can mate.</p>
<p>im not exactly sure why proteins w/ OH group are phosphorylated (maybe some chemical property of the OH groups?) but i clearly remember our bio teacher telling us this.</p>