**OFFICIAL SAT Biology E/M June 2013 Exam**

Test Preparation SAT Subject Test Preparation
481

<p>So does anyone know that question where the bag was permeable to water but not glucose/stach (or whatever was in it) and it asked what would happen if you left it</p>

482

<p>Yea that’s what I was thinking</p>

483

<p>the starch bag answer was the graph where the water in the bag rose linearly as time went by.</p>

484

<p>Hey Satman. Was your SAT score 1111? I really don’t need your sass here. The question on the exam asked for the plant part that allowed for stem and leaf growth. Vascular cambium fits that description. Apical meristems lead to the growth of roots and shoots.</p>

485

<p>yes, and the apical meristem is what allows for plant and leaf growth. You do realize that shoots are new plant growths (stems and leafs) right?, and bigger roots anchor the plant allowing the plant to grow larger. On the other hand, the cambium only is involved in secondary growth, which is the xylem and phloem. The last time I checked, the xylem and phloem were not leaves or stems…</p>

486

<p>you should seriously do some research the next time you want to tell me I’m wrong twice</p>

487

<p>I agree with @Satman1111</p>

488

<p>Thanks satman1111
And agreed</p>

489

<p>WAIT or did that question ask what would happen to the starch concentration?</p>

490

<p>I’m pretty sure it was how much water was in the bag. I remember checking the question just to make sure that it wasn’t about the concentration.</p>

491

<p>Perhaps it’s apical meristem then. I always thought apical meristems only induce root growth. Anyways, would -4 (technically -5 because of -1/4 rule) be an 800?</p>

492

<p>And I did do research Satman. It’s called wikipedia. And my biology teacher said that vascular cambium would fit the description.</p>

493

<p>If I remember correctly, the bag was permeable to water but not to starch, and the question asked about the level of starch in the bag as time passed. Therefore, the correct graph would be a horizontal line beacuse there would be no change in starch concentration.</p>

494

<p>^ I am 100% sure that was the right question and answer</p>

495

<p>if water entered the bag, wouldn’t the starch concentration decrease because there would be a higher water-starch ratio? I could be wrong; I originally thought starch concentration would stay the same</p>

496

<p><a href=“https://photos-6.dropbox.com/t/0/AAB9kmqOzum0Y2z_AYMoC0AhLVOvkKsgU8gy7Tk92wELCw/12/138401017/jpeg/32x32/3/1370484000/0/2/300520131957.jpg/CzdSsensSlkV-HIOdoWtXS0mnkHogbhqkvF1io3kO6U?size=1024x768[/url]”>https://photos-6.dropbox.com/t/0/AAB9kmqOzum0Y2z_AYMoC0AhLVOvkKsgU8gy7Tk92wELCw/12/138401017/jpeg/32x32/3/1370484000/0/2/300520131957.jpg/CzdSsensSlkV-HIOdoWtXS0mnkHogbhqkvF1io3kO6U?size=1024x768&lt;/a&gt;&lt;/p&gt;

<p>here’s the exact question. I think the answer was B… looks like we all got it wrong</p>

497

<p>It all depends upon how they define “concentration.” I remember this experiment from AP bio, and the correct answer was that the concentration would remain unchanged. Lovely ambiguity…</p>

498

<p>I cant see the picture satman but i think i didnt put constant i put that the concentration would decrease</p>

499

<p>I was confused on this question also but I think the answer should be concentration decreases (which is “B” I presume) because if water comes in the bag the amount of solute per volume of solution decreases. I put same on the test…Oh well I missed 6 up till now I think…</p>

<p>Btw does anyone remember the mice and frog series of questions I had a couple of doubts on those.</p>

500

<p>Does anybody know the answer to that question? I was trying to decide between a nonsense mutation (stop codon), nondisjunction, and one other I forget (it wasn’t the silent mutation or an amino acid substitution, it was the other option). Nondisjunction is the least likely, but it has nothing to do with a base pair substitution (it is a chromosomal mutation, not a genetic mutation). A nonsense mutation is less likely than nondisjunction, but is more related to a base pair substitution. Anybody know the answer FOR SURE?</p>