<p>Is the enzyme one everyone is talking about the same question? The activity level went down when temperature got too high though, so I put it was denatured. Because enzyme activity increased with temperature to a certain point, but too high of a temperature causes denaturation of the enzyme.</p>
<p>bloog – I believe I put genetic drift for the 6 animals one.</p>
<p>thanks jess.i.can
looks like I missed that one…crap…I blindly guessed recombination (stupid I know)</p>
<p>does anyone have any idea what the curve for bio E is like??
let’s say…missed 7 or 8 and omitted 2 =D =D</p>
<p>msmalik428 - I put analyze ecosystem and species for the first one, and capture and release for the second.</p>
<p>I still have absolutely no idea how I did haha</p>
<p>bloog – The curve changes each year, but I heard you can miss around 2 or possibly 3 for an 800.</p>
<p>koken911 – I did too.</p>
<p>NotToo_Crazy – LOL Me too (:</p>
<p>koken
I put “introduction of exotic species”. The reason being that since the starling was introduced as a nonnative species, it would have no natural predators/any competitors which is why it managed to spread so quickly. If ANOTHER NONNATIVE species came, chances are the two will have to compete for resources, which will bring down the population of starlings. Furthermore, the question specified “biological mechanism” and, to me at least, the exotic species best fit the description…</p>
<p>ok thanks jess</p>
<p>i first flocked to that answer…than decided to choose the other one because it asked what would be the first step in actually preserving it…so i picked capture and relocate. O well, just another question to add to the long list that I missed.</p>
<p>I see the rationale behind the introduction of an exotic species, but I don’t think that would be an answer that the test writers would want. Usually nonnative species are a bad thing, and would mess up the rest of the ecosystem even more. Relocation seemed to be the answer choice that would least disturb the rest of the environment.</p>
<p>Again, I’m not sure though :/</p>
<p>ya jess I see your point as well</p>
<p>and I did debate between the two, but I’m taking environmental science this year and somewhere in the textbook is stressed that nonnative species must have competition otherwise the population will be uncontrollable =/</p>
<p>oh wells we’ll have to wait and see</p>
<p>yea i picked capture and relocate just cus i thought the others wouldve got rid of the starling population but also destroy the environment in some way…
i have no idea.
but introducing a new species makes sense in that its the most “natural” of ways… like leaving it to nature to get rid of the starlings. but idk</p>
<p>for the enzyme question, there were 3 on the graph total and 2 on the graph 1 right? so graph 2 was about substrate concentration and the answer to that q was that it was directly proportional when when concentrations were relatively lower (cus the enzyme runs at max capacity if you just keep on putting substrate in). and does anyone remember what exactly that enzyme question that had an answer choice about the fact that heating it up increases collisions?? cus i remember not picking that (but now it seems right…)</p>
<p>what would be like a -5 and skip 3?</p>
<p>i probably missed more than 5 though…</p>
<p>Aight Starling Question (BTW I self studied Env. Sci.too) -</p>
<p>Introduction of Exotic Species: I feel this is incorrect because:
a.There’s no guarantee that these birds will be competition to the starling.
b.Even if they are competition, you’re worsening the problem - the question (as I remember) was based around how to conserve the North American native birds and get rid of invasive species.
c.Bear in mind the question (as I remember again) was asking for reducing population density; adding birds will increase density or keep it the same if somehow all the starlings die.
d. Introduction of Exotic Species? If it sounds corny or weird it’s probably not right.</p>
<p>Virus to kill them all: Don’t think it’s this because:
a.Viruses tend to mutate frequently and pose a clear threat to other species.
ex.Just look at swine flu or avian flu.
b.I’m pretty sure the question asked about lessening population density and not killing them entirely off.
c. Again, which SAT writer would put, “Kill an invasive species” as the answer</p>
<p>Chemicals:
DDT nuff’ said</p>
<p>I think it’s relocation because:
a.Doing so will reduce population density without destroying the ecosystem
b.It’s the only one that sounds sane</p>
<p>Of course, knowing my luck with collegeboard, everything here is completely wrong.</p>
<p>^ I chose relocation. Seemed like the only one that wouldn’t destroy the starling population and post some kind of risks to humans. Btw, what was the fifth choice? I don’t seem to remember it…</p>
<p>Don’t remember the enzyme questions, but optimal temperature (usually higher temps used for test material) increases movement of enzyme and substrate which in turn increases chances of them meeting. I’m pretty sure I put “II only”. Choice I had something to do with diffusion and did not make much sense. Choice III was obviously wrong (though i don’t remember it right now). Also, higher temps than optimal temperature causes denaturing. I’m sure peptide bonds break off at some extreme temp, but it’s the H-bonds that go first -> enzyme loses form and denatures.</p>
<p>^Yeah, I put what driscol did for the enzyme one.</p>
<p>Direct proportional at lower temperatures(or was it concentration?w.e) and
Only choice 2. If I remember correctly the choices were -
Increase reaction speed (catalyst)
Increase collisions
Something else (Mabe denature or smtin).</p>
<p>I put only increase collisions.</p>
<p>Wait did the enzyme I II III question specify for optimal temperatures? Because I’m pretty sure enzymes do denature at high temperatures… Or I think I’m just really confused. Does anyone remember the question and all three answer choices?</p>
<p>i tried to consolidate everything. all the E questions are marked but i took M so i think i missed marking some M questions…</p>
<p>Starling questions – range of greatest growth 35-45; the others… no one knows for sure…</p>
<p>boiling leaves in alcohol – get rid of chlorophyll</p>
<p>dead tissue that keeps functioning – xylem</p>
<p>heaviest element – Wikipedia says oxygen, but many people put carbon, anyone wanna confirm this?</p>
<p>karyotype questions - 48 chromosomes in a somatic cell right; 24 in a haploid cell; 24 from mother; 25 if trisomy were to occur</p>
<p>fertilization graph – between abrupt change at beginning of time 2 or change during time 2</p>
<p>kidney dialysis – getting rid of metabolic wastes</p>
<p>diagrams of the hand/wing/fin structures – grasping was human #6; swimming was fin #1; the convergent evol structures was bat and bird #2+3</p>
<p>most diverse phylum – arthropods</p>
<p>[e] mollusks’ hard shell – secreted by mantle</p>
<p>[e] growing tree – tree will still be at 4</p>
<p>carbon cycle – photo and resp main contributors</p>
<p>mendel – between i+ii and all of them; but I think its tilting towards just i+ii b/c segregation of characteristics is wrong</p>
<p>most likely baby – right after egg is released</p>
<p>tree+ants mutualism – coevolution</p>
<p>bmr/mouse/cricket questions – bmr is dependent variable; mouse was an endotherm and needed to regulate its temp (this was my answer… anyone know if its right?)</p>
<p>no membrane around – chromosome</p>
<p>immune system after a virus is introduced – between making new lymphocytes or proliferation of existing lymphocytes that will make the antibodies…</p>
<p>organelle you cant see through microscope – ribosome</p>
<p>[m] organelle in which glucose+protein linked – golgi</p>
<p>blood transfusion – agglutination</p>
<p>plant cell cytoplasm goes through – plasmodesmata</p>
<p>blood questions – plasma moves material; red blood celles transport oxygen; white blood cells fight infection; platelets repair stuff</p>
<p>[m] virus questions – retrovirus was aids; reverse transcriptase was rna to dna; capsid is protein coat; phage is virus that attacks bacteria</p>
<p>linked genes – i+ii</p>
<p>plant in darkness/light questions – plant in 24hrs dark performed resp</p>
<p>what contributes most oxygen in photo – h2o</p>
<p>[e] cyanide - … i didn’t take e so I have no idea what exactly is going on with this</p>
<p>liver what does it not do – produce red blood cells</p>
<p>co2+acid indicator questions – breath contains co2 was tubes 6+7… I forgot the others</p>
<p>sperm question – seminiferous tubules</p>
<p>enzyme/substrate questions – I’m not sure about these… does anyone wanna clarify?</p>
<p>[e] 4chambered heart – blood could be circulated to lungs… someone who actually took e can clarify</p>
<p>[e] six animals killed off in storm – genetic drift</p>
<p>This may seem like a silly question, but is the June Bio Sat II completely different from the May?</p>
<p>swerty, Bio SAT always covers about the same topics, but the questions will be different between tests.</p>
<p>xiaohyolee –
I think these questions are from the molecular section, because I don’t remember them:
heaviest element – Wikipedia says oxygen, but many people put carbon, anyone wanna confirm this?
fertilization graph – between abrupt change at beginning of time 2 or change during time 2
immune system after a virus is introduced – between making new lymphocytes or proliferation of existing lymphocytes that will make the antibodies…
organelle you cant see through microscope – ribosome
plant cell cytoplasm goes through – plasmodesmata
co2+acid indicator questions – breath contains co2 was tubes 6+7… I forgot the others
sperm question – seminiferous tubules</p>
<p>^ but that’s a lot, so maybe i just have bad memory…</p>
<p>immune system after a virus is introduced – i put making new lymphocytes because there was a lag between the introduction and the response so I thought there wouldn’t be any memory cells.</p>
<p>bmr/mouse/cricket questions- I put temperature as dependent because that’s what your changing? I thought bmr was the result…nooo idea I’ve always sucked at determining dependent variables.</p>