<li>why is a recessive autosomal disease genotype written as Aa, please explain? how is a dominate autosomal disease written?</li>
<li>do we have to know things like stele, endoderm, apoplast, and symplast in great detail?</li>
<li>can someone describe to me the marine biome, like the different layers, because Barron’s doesn’t go into it. (sobs)</li>
<li>do we have to know the scientists that discovered things/won the nobel peace prize? aka: niko tinbergen, karl von frishk, or ivan pavlov?</li>
<li>if a cell is in a 5% saline solution, is the liquid automatically hypertonic? (Barron’s just gives me a picture with a cell in a saline solution and asks me what will happen to the cell…)</li>
<li>do you have to know the microscope parts? how often does it appear on the test?</li>
</ol>
<ol>
<li>It shouldn't be. Recessive autosomal diseases should be written aa. Dominate should be Aa or AA. </li>
<li>I don't know; I didn't take the test. I just took AP Bio. </li>
<li>It wasn't on the AP test, so I doubt it'll be on the SAT Subject Test. </li>
<li>Absolutely not. </li>
<li>You have to know the concentration inside the cell (I'm not even sure of that one.) </li>
<li>No. There might be applications of the microscope, but not actual questions about microscopes. </li>
</ol>
<p>Barron's goes WAYYYYY too deeply into detail.</p>
<ol>
<li>really?
if you have Barron's 08 Biology book, look at # 52 and 53 on practice test 1,
it asks,
[quote]
the trait for vestigal wings is most likely
a. auto dominate
b. auto recessive
c. sex linked dominate
d. sex linked recessive
e. it cannot be determined
[/quote]
</li>
</ol>
<p>Barron said B was the right answer and I agree with them, but then...</p>
<p>
[quote]
what is the most likely genotype?
a. Nn
b. NN
c. nn
d. X-X
e. X-X-
[/quote]
</p>
<p>the answer is A, which is Nn...
bleh.</p>
<ol>
<li>it doesn't say anything about the saline concentration in the cell. I'm thinking the implied concentration is 0.</li>
</ol>
<p>bumpy lumpy.
come on guys >.< please help meh :D</p>
<p>human cells are isotonic with a .9% saline solution. (read it in PR... I LOVE PR... they're the best)</p>
<ol>
<li>do we have to know the extraembryonic membranes of the bird embryo?</li>
</ol>
<p>^I don't even know what that is, so I would guess not. Nothing that detailed was on the test. And to the genotype question, was it asking about a particular individual, or just the trait? I would look it up, but I've lent the book out.</p>
<p>I have the barrons book too, and took a look at your question. It asks for genotype of the normal wing...so since you've already determined that vestigial is autosomal recessive, answer is either A or B. Since the parent female is clearly not homozygous dominant (otherwise there would be no vestigial offspring), it must be heterozygous. If you do a cross, you find that there is no possible way for any homozygous dominant offspring to be present.</p>
<p>EDIT: With the extraembryonic membranes, are you referring to like chorion, allantois etc?</p>
<p>I really have no idea how in depth SAT bio goes. I'm basically self-studying (will take AP next year), and am reading all of Campbells O.o Do you guys/gals think I should stop with that and really only study the review books? I've gone through Campbells a few times before for various things, so I have a foundation of knowledge, but I probably dont remember every single thing in it.</p>
<p>@ Echelon32 - If you read campbell, all of it - ur basically guaranteed an 800. However, I reccomend going through study guides and using campbell as a refrence on things that may be confusing.</p>
<p>Anyways, is it possible that the nephron diagram may show up? One of the Barrons practice tests has a nephron diargram and asks to identify parts based on their functions.
So should I study the nephron diagram in depth, or just know how it looks like (and the two loops) and what its overall function is?</p>
<p>does anyone know if 2007-2008 PR is flat out wrong about classifications? it states there are five kingdoms, and does not mention the domains. Most importantly, it also states that monera exists. </p>
<p>the PR bio AP book said this is the older style of classification; it's my understanding the domain system has been used for quite a while (circa 1990ish)</p>
<p>Will the SAT bio expect me to know traits about the older system, specifically monera? or should i learn the new classifications monera was split into in the 6 kingdom/3 domain system?</p>
<p>Clarification: I'm not asking which is correct. I'm asking which is on the test.</p>
<p>bumppy lummmpy</p>