May SAT II Biology E/M

<p>does anybody know anymore questions especially hard ones? so far, i’ve omitted 4 and got 3 wrong. according to the conversion chart on SAT Subject Test Guide, i got a 770. i know its probably not the same, but im pretty sure i will get pretty close to that score. I hope I didnt make any careless mistakes.</p>

<p>I have 4 wrong and 1 omit…does anyone know what the score is?</p>

<p>You are right! D’s study materials did not prepare her enough. She was self studying and hasn’t taken upper level biology. big holes in the materials.</p>

<p>i thought auxins promoted cell division, so i put cell division and cell enlargement (I and II) but i guess i was wrong.</p>

<p>if i had to test for light, i would have selected C for the carrot one, it was “black paper bag and uncovered bowl.” it was a simple light/no light test. it doesn’t seem like the plastic bag would allow more light in than uncovered bowl (assuming that the black bag allows no light at all)</p>

<p>and what does 3 wrong, 1 omit come out to be?</p>

<p>from wiki</p>

<p>“On the cellular level, auxin is essential for cell growth, affecting both cell division and cellular expansion.”</p>

<p>^if you looked at the diagram, there weren’t more cells. They just became larger. The plant hormone cytokinins is more related to cell division; auxin is more for cell enlargement, though I guess it could play a role in cell division.</p>

<p>Firstly, it couldn’t have been the clear and plastic bags for the carrots because plastic had an effect on the firmness, it had to be black plastic bag vs. out in the open (a bowl i think?)
And also, what was the answer to the cystic fibrosis question?</p>

<p>@ RAlec, yeah, you’re probably right. i agree that auxins are involved in cell growth, but the SAT II review books emphasize that cytokinins have a bigger role.</p>

<p>@scameron, yeah. i completely agree. and i remember a question about cystic fibrosis, can’t remember what it was though</p>

<p>It was clear and black plastic bags for the carrot question. The materials are the same, but one lets in light and the other doesn’t. The fact that they both result in slightly reduced firmness demonstrates that light doesn’t really have any effect on the firmness, ability to retain water relies more on heat and openness of the container I guess.</p>

<p>Yeah, I agree with the post above me. If it was exposed to air, it would have not been a controlled experiment since there are other factors besides the exposure to light, while the plastic clear and black bags ensure that it is not air or heat that interferes with the results. That’s just how I perceived it.</p>

<p>I agree with the above posts. The clear and black plastic bag experiment would only have one variable (light) while the black bag and open bowl experiment would have 2 variables (material and light)</p>

<p>How many is around 9 wrong on Bio-M?</p>

<p>I think the answer for the flower zygote -> embryo was diffrentiation. </p>

<p>Since in a human a zygote remains a zygote after mitotic divisions and becomes a blastocyst when 2 different types of cells emerge for the first time. Also you could see in the picture clearly that the embryo had two different looking cells whereas the zygote did not.</p>

<p>but it has to be mitosis. because while you can debate the fact that the cells look different etc etc etc, you can NOT debate the fact that a zygote divides mitotically.</p>

<p>Anyhow, just a changed shape alone might not mean differentiation. differentiation traditionally refers to when cells become nerve cells or muscle cells or etc etc etc whereas it looked like that embryo still had 1 germ layer</p>

<p>And then for the carrot one I put clear plastic bag - black plastic bag. because in this scenario everything is controlled but light. in paper v bowl you have other things affecting it such as the fact that its open to the air etc etc</p>

<p>what was the answer to the question about the man who was in the desert and how to cool the body down?
i think the answer choices were more blood to skin, goosebumps, increase muscle activity, decrease sweat and one more that i forget
i skipped this question cuz it made no sense but i was jw what everyone else put. help is much appreciated</p>

<p>I got black plastic bag vs. open. Basically, Exposure to light vs. No exposure to light (black absorbs the light, and the plastic blocks it).</p>

<p>This question asked about which tests light as a factor yes? Plastic bags aren’t light-penetrable, right? At the time I was thinking of shopping bags…</p>

<p>Kidkorean, the answer was more blood to the skin. Specifically said in PR, score for PR! Although PR completely missed active/passive immunity, acclimation, and allergic reactions. Would have an 800 if it weren’t for that section…</p>

<p>10 wrong is about a 740, based on the curves posted in CB’s released bio test.</p>

<p>i know PR didnt cover passive, active immunity, and allergic reaction. but it was pretty obvious. FYI, PR did cover agglutination, u mean. haven’t u heard of antihistamine commercials for allergies or taken a health class in high school? the only ones left were passive and active immunity. those were pretty obvious, because immunity from placenta is temporary and will PASS, therefore passive. immunity from having it before will be forever, so active. however, i will agree that PR didnt cover several questions, but PR helped me out a lot by simplifying the info and i knew most of the questions cuz of PR.</p>

<p>I wouldn’t call it obvious… </p>

<p>I have never heard of antihistamine commercials, because I don’t pay attention to commercials with that level of awareness (I don’t watch TV much at all). </p>

<p>Health class at my school is a complete joke, so no I never learned anything there.</p>

<p>“passive” and “active” are pretty vague, to me they both sounded passive, so guessed passive on both… your reasoning isn’t at all obvious… whatever</p>

<p>I learned agglutination from PR and school, so I got that one.</p>