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

<p>Oh wow that’s wrong then. How many questions wrong can probably get you a 770+ at least?</p>

<p>Okay so for the Menstrual Cycle one.</p>

<p>I put that it’s monthly because I used process of elimination.</p>

<p>Shedding of the Endometrium is WRONG as it asked for the embryo. The correct answer is ZYGOTE as the embryo only develops after cleavage which occurs after implantation.</p>

<p>I thought that the uterus regulating ovaries is WRONG as the way that the uterus regulates is through human chorionic gonadotropin which is produced by the embryo in the uterus which prevents the endometrium from being shed. This acts on the pituitary gland and NOT the ovaries.</p>

<p>does anyone remember putting the answer that eggs are not immediately fertilized?</p>

<p>ok, seriously people, does anyone know for sure what the beetle population answer was?</p>

<p>What did everyone put for these? : M</p>

<p>-Last one on M about enzymes higher activity at 30 degrees (i put something to do with collisions)
-The heart one about which is true (i think it was either pulmonary and aorta are two way, or the left and right are completely separated)
-Plasma contents (which is not, i put saliva)
-Inhaled air vs atmospheric (it was either it’s humidified or that co2 is removed in nasal cavity)
-Prokaryote vs Eukaryote genes (i put that prokaryotes did not have non coding sequences something…)
-Dolphin vs elephant i believe? M. It had two dna sequences, the question im asking is what would the different sequences likely cause? (it was either no interbreeding or different proteins are made, i put the latter)
-For dolphin vs. elephant, what likely caused the missing bases (I put errors in DNA replication mutation)
-^If A is subbed for T what is the most likely result (i put shorter polypeptide)
-Where is ribosomal rna made?</p>

<p>If you have questions, ask me. I think i got 800. :)</p>

<p>May2013sat I remember putting that for an answer… I’m not sure if its right though</p>

<p>@satman it should be a backwards J.</p>

<p>There was one question that was in the set of questions dealing with adaptive radiation, etc. that had to do with a population of a species being seperated geographically and after a few generation an allele disappears? Was that directional selection? Or what?</p>

<p>i put all the same ones as you</p>

<p>@biofun, you’re wrong. The zygote occurs before implantation. It becomes an embryo before it attaches to the uterine wall</p>

<p>the monthly one was wrong because it said menstruation occurs for THE WHOLE LIFE</p>

<p>@may2013sat yes that is correct</p>

<p>@jadenio, that one was genetic drift (the bottleneck effect)</p>

<p>talley24:</p>

<p>I got the same as you.
For the dolphin-elephant one I put that the proteins made from the DNA would be different.
For the heart one, the left and right are separated.</p>

<p>I don’t there was any answer with directional selection in the beginning…</p>

<p>Does anyone remember the unicellular vs. multicellular question?</p>

<p>^yup, answer mine on the last pg. I’m hoping for 760+ but it seems like you got 800 lol, and then: CURVES?</p>

<p>@jtalley, all those are correct, the rrna is made in nucleolus</p>

<p>@biofun i was thinking that but the pulmonary and aorta are both two way right?</p>

<p>the right and left side of the heart are completely separated.</p>

<p>for the unicellular vs. multicellular, I put that the multicellular has intercellular communication</p>