<p>@Remembrance Nope, they make each one up on the spot when they grade. They take a sample of 100 test booklets and read through them to see what most people included, provided its correct in the first place. Then they make the rubric up. That’s why on some FRQs you get graded on some things, like a title on the graphs, but on other similar questions on FRQs, that’s not even worth a point.</p>
<p>For the fly one I just said during crossing over or independent assortment etc the flies change in phenotype and thus genotype as well.</p>
<p>@CercaTrova well i didn’t have a title on my graph… I labeled the axis for sure though. I did the same transpiration FRQ in the practice test, and there was no mention of a title in the answers at all.</p>
<p>but if they make it up on the spot, they have to have some sort of pre made basis. like what about the endoderm ectoderm FRQ one? if you were able to justify what you said, or the booklets are 50:50 in their answers, what then?</p>
<p>We are endotherms. We do not decrease respiration rate at lower temperatures…we increase respiration rate to produce more energy to maintain internal body temp. The thing in the graph decreased respiration rate as temperature went down…it was an ectotherm. Same in the MC…the rat consumed oxygen quicker at the lower temp cause it needed to do roe respiration. </p>
<p>@schakrab but the graph’s x axis started at 10 degrees C. technically, one could argue that the temp wasn’t cold enough for the organism to have to increase metabolic rate yet</p>
<p>Question 1 looked like it was straight out of a stats test or something. For the experiment, I proposed that the control was a population with no herbivores to see if trichome density would be maintained or not over time. If trichome density increases over time naturally in the population then the experiment might not have a valid baseline. The IV was the average trichome density in the population and the dependent variable was average trichome density or number of surviving plants because this should be determined by the amount of trichome in the original population before selection…that was my take. Since the experiment told you to determine whether the plants with more trichomes would survive more or something I thought this made more sense because less trichomes in the population after a period of time would indicate that trichomes don’t increase fitness, while the hypothesis that trichome density increases fitness would be fulfilled if the dependent variable, trichome in the resultant plants, were higher than the original density. I think just arguing your points well can score you some points. These are some really open ended questions.</p>
<p>Anyways, that was a bad question for a Bio test imo, I probably got some stuff off on it. Any chance they throw out a free response? Or do they just curve accordingly?</p>
<p>true…but arguing that the thing is cold blooded is much easier and they can’t mark it wrong. I guess you could argue it like that too…who knows what they are looking for? I have a feeling that there will be some weird curve stuff with this test. The free response for the O seemed MUCH harder than a released free response from last year. </p>
<p>If it just became 70% instead of 80, I would feel a bit more confident for a 5. But I’m not thinking that’s too likely unless they legitimately (and justly) change the curve. </p>
<p>I don’t have a problem with the MC, but those FRQ’s were just…weird. Too much ecology and I was completely lost on the first FRQ on form O. My answers on a lot of the rest of the FRQ’s seem to be completely different than what other CCers wrote, so I’m more concerned now than I was after the test.</p>
<p>@schakrab just to further argue my point… endotherms may need to use more energy, i.e. increase O2 consumption, in order to cool themselves. examples would be dogs panting or humans sweating to keep cool</p>
<p>Basically I think I messed up the statistical portion of the first FRQ and then part of the genetic variation while doing really well on the rest…hopefully that’s enough to get a 5. That was just weird test. I wouldn’t be surprised if the curve was closer to a 70 than an 80 because the form O FRQ seemed SO much harder than the ones from last year</p>
<p>sweating is a natural thing…requires no energy…we increase breathing rate after exercise because of increased acidity and hemoglobin not being able to bind to oxygen that well, not because it is hot. Dogs panting…I don’t know. </p>
<p>^
No, wait. I remember the question now. I said progesterone was important in regulating pregnancy or something. There’s no progesterone gland I believe. That’s why I ruled it out.</p>
<p>Anybody remember that one with the starch one about leaves? Like a leaf showed white spots, and only the green spots showed starch presence or something like that?</p>