October 2011- Biology E/M

<p>Aiming the answers can be found on page 5.</p>

<p>The tree trunk is .90.</p>

<p>Guys, the sexual reproduction question was asking WHAT factor of it made it different from asexual reproduction. So, it would be haploid sex cells, since that’s what organisms that reproduce by asexual reproductions don’t have.</p>

<p>It actually asks what is necessary for sexual reproduction. But either way, I do think the answer is haploid gametes.</p>

<p>I think I can tentatively say I have something like 7-10 wrong.</p>

<p>I should’ve omitted the stupid ear question. </p>

<p>And are you sure Niceboat/kiwi? I feel like it was something else.</p>

<p>I’m 85% sure lol. And I should have omitted the ear too. I put something about frequency, the answer was something to do with basilar membrane, I believe.
I have 2 omit 4-8 wrongs?</p>

<p>I got four omits (3 of the Ganglia questions, and the ear) and 2 wrongs(probably have more wrongs though lol)</p>

<p>I rushed 2 of the 4 ganglia questions and omitted the other 2. So I might have gotten those wrongs as well.</p>

<p>the answer was “nonmotile egg and sperm”. but whether or not that means nonmotile: egg AND sperm, or nonmotile-egg, and sperm, is up to interpretation. eitehr way, I don’t think that’s the right answer.</p>

<p>yea that Ganglia set was ridiculous, everyone else said it was super easy but I had no idea what I was doing so I just omitted the last 3 of them and made an educated guess on the first one :/</p>

<p>Scores come October 20th!</p>

<p>**** now that I look at it @wisdom908 if you read it like that, it could be the answer… what kind of wording is that though… collegeboard should seriously have done the test better. Also, I think that this test repeat is completely unfair</p>

<p>What if the order was nonmotile sperm and egg? Then the choice would be invalid, right?</p>

<p>I feel like it was nonmotile egg and sperm. I definitely crossed that choice out.</p>

<p>On the compilation of answers posted a few pages back, the answer for the question about color blindness was 0%.</p>

<p>Was this what everyone else got? I don’t remember getting 0% for any of the genetics problems.</p>

<p>Yea, the list is probably wrong as I don’t recall a 0%… it was probably 25 or 50%</p>

<p>Thank you! Yes it was one of those.</p>

<p>i think i got 50%</p>

<p>Anyone taking M:
Surface area to volume ratio? Familiar?</p>

<p>@Emirald: Yes, I think the question was about the probability of a son being affected, so that would be 50%.</p>

<p>@Parallelism: I got the same answer for that question.</p>

<p>Has anyone confirmed the answer to the question about what is necessary for sexual reproduction? I put haploid gametes as well.</p>

<p>Yes, there was a 50 one, specfically</p>

<p>Chances of male being colorblind from normal dad and carrier mom- 50%</p>

<p>50 was also the answer to the one about the chances of having a third daughter, after the first and second daughter.</p>

<p>It was harder than chemistry, but I think I pulled a 700 or higher, looks like 3 wrong so far with no omits, but I’m sure I got more wrong. I thought the M section was pleasantly straightforward, got confused on 99 and put that they need to each Ea in order to become more stable, I just thought that rearranging the bonds in the reactants sounded weird.</p>

<p>What about the fruit fly one? I put I and III cuz the mom could be RR or Rr, and mating with a r male would give 100% red eyed or 50/50 respectively.</p>