<p>oh and another one what about the question that was like when do plant cells usually divide or where what was the answer for that</p>
<p>Yeah, what did everyone else put for that tree population problem? I put beech because it seemed like that population was rising and everything else was going down, but I really rushed through the test, so I might have gotten the key confused. I remember the bar was dotted…I think?</p>
<p>wait…what was the actual question? Was it which tree will dominate in 50 years or which tree will be extinct in 50 years?</p>
<p>Plants usually divide at the meristems. And I picked beech for that other question.</p>
<p>So what is up with this brain cavity question? About the questions in debate, I put </p>
<p>1, 2, 3 controls
Beech
1/2 for pea plants
Swell & burst</p>
<p>What was the question for the pea plants? I don’t even remember. I rushed through the genetics problems really fast.</p>
<p>Perplxd- The question was, what will be the tree population be like in yr 250 (which is 50 yrs after the last graph they provided us). I put beech, although it could be mixed. pretty sure it’s beech though</p>
<p>For the shorter large intestine question… it’s watery feces right?</p>
<p>What are antibodies made from? I put lymphocytes, but some of my friends said it was bone marrow.</p>
<p>Thanks, Mandizz, for confirming the question. I’m pretty sure it’s Beech.</p>
<p>Antibodies are made by B cells, which are lymphocytes. It can be confused with bone marrow because lymphocytes originate from bone marrow, but bone marrow does not actually create anibodies.</p>
<p>largery intestines question - water feces. Large intestines absorb water, and do no nutrient absorption.</p>
<p>Guys, it was comparing the source 1L to the .1mL placed with the agar. So 80 colonies -> 80*(1000/.1) = 800,000?</p>
<p>****, wait, there were 8 original colonies, huh?</p>
<p>no its not 800,000. it was 80,000.</p>
<p>the 1mL was diluted to 1L and that represented 80 colonies. </p>
<p>i believe they asked for what would 1L of the concentrated 1mL solution result in.</p>
<p>since 1mL represents .001L, that means that the 1L dilute solution represented 1/1000 of the colonies that a concentrated 1L solution would (because there are 1000 mL in 1L…)</p>
<p>thus, you had to do 80 X 1000 = 80,000 colonies</p>
<p>I also got TtRr, not ttrr. Isn’t that the standard Mendelian test cross or something? That’s not the name, but there is one.</p>
<p>Mendel didn’t talk about crossing over, for sure. He had no idea about genetics at the molecular level.</p>
<p>i’m pretty sure impboy is right</p>
<p>agh, once i got the 1000 part, i just chose that answer instead of multiplying it with 80 to find the number of colonies. beh, i knew i should’ve read through the lab questions more carefully</p>
<p>No, I explicitly remember checking that it said 0.1mL. I don’t, however, remember whether the original was 8 or 80 colonies, but if you’re right that it was 80, 800,000 was in fact the answer then.</p>
<p>Edit: I answered II and III for controls as well, also because they only differed in one respect as opposed to two. Comparing root growth times is irrelevant since they are the outcomes, and not part of your experiment inputs.</p>
<p>a test cross is crossing an organism who shows the dominant trait (but you don’t know homozygous dominant or heterzygous), with an organism with a recessive trait (because you know that the genotype has to be homozygous recessive). </p>
<p>Therefore my answer was ttrr</p>
<p>80 * 1000 is 80,000 not 800,000</p>
<p>1L = 1000mL, 1000mL/0.1 = 10,000. 10,000*80 = 800,000.</p>
<p>Ouch, I got the test cross question wrong. 5 wrong, 1 omitted…</p>
<p>Oh, and who else thought the ‘sarcomerase’ digesting the muscle fibers for contraction was cute?</p>
<p>haha - me too! I almost laughed out loud, but my proctor was scary.</p>
<p>the answer to that question was the cross bridges between myosin and actin filaments, right?</p>
<p>First, about the agar plate and soil concentration question, did anyone just stick with 80? I assumed that the carrying capacity of the agar plate had already been met–if that makes any sense. Also, it seems that the general consensus is that this was a harder test than usual, so does anyone want to start speculating about what the curve for this particular test is going to be? I assume it is going to be somewhat more generous than the 74 = 800 curve from the REAL SAT book, but beyond that I have no idea.</p>
<p>I’d rather not speculate and end up dissapointing myself, but according to my Princeton Review book, a 64 is a 690, and a 75 is a 770.</p>
<p>xstatic, the year that that REAL BIO SAT was given is probably an important factor. Do we have any recent statistics?</p>