~SAT 2 Biology Review Thread~

<p>capillary (both direcetions), veins (towads the heart), arteries(away from the heart</p>

<p>all are characteristics of eubacteria except
a)introns are present
b)tough external cell wall
c)useful for genetic engineering
d)reproduction by conjugation
e)are decomposers</p>

<p>Yea, I figured I would be wrong on that one…oh well, I guess I’l have to extra analytical on the test on Saturday, but hopefully they won’t give a question like that…</p>

<p>Capillaries:exchange gases and nutrients so in between arteries and veins
Veins:toawrds the heart
Artieries:away from heart</p>

<p>

</p>

<p>A…eubacteria don’t have introns only Eukarya do.</p>

<p>High concentrations of carbon dioxide:
a) lowers the pH of blood
b) increases the pH of blood
c) keeps the pH of blood constant
d) induces apoptosis</p>

<p>A</p>

<p>what is the advantage of a polymerase chain reaction</p>

<p>Rapid copying/replication of DNA used for research. </p>

<p>What does the helicase do?
What are Okazaki fragments?
White blood cells have a lot of which organelle?</p>

<p>Why does CO2 lower pH?</p>

<p>White blood cells have a lot of which organelle?
lysosomes</p>

<p>What are Okazaki fragments?
the lagging strands in DNA replication</p>

<p>What does the helicase do?
unzip the DNA for replication</p>

<p>Umm… something with DNA replication… unravel the DNA?
Separate strands of newly created DNA that have yet to be connected
Lysosomes</p>

<p>In what way is the pancreas involved in the digestive system?</p>

<p>the pancreas secretes enzymes into the small intestine that help breakdown and digest food so it can be absorbed through the villi of the intestine and into the bloodstream to “fuel” our bodies</p>

<p>because when the CO2 increases the ph of the blood goes below 7.4 casuign the medulla oblongata to increase the rate of the breathing</p>

<p>Thanks for your help! =)</p>

<p>Question: Can the princeton review book alone prepare you for this test?</p>

<p>Hey guys, so I am pretty nervous about this test. I still have ecology part to study and 9 phyla of animals to study. I also have to review the first part of the year containing biochem, photosynthesis, respiration, heredity. Can I do everything in one day ???</p>

<p>Is the SAT gonna be so detail to the level of this question:
What are Okazaki fragments?</p>

<p>Hey guys, on the test when it asks a question regarding a sex linked trait (lets say colorblindness) and it says that the mother is a carrier and the father is normal, if it phrases the question like “What is the probability that they will have a son who is colorblind” are we supposed to give the answer out of the sons (50%) or take into account the chance of having a son and then the chance of having a colorblind son (25%)
And also, if they say “What is the probability that they will have a colorblind son” are we supposed to give the answer out of the sons (50%) or take into account the chance of having a son and then the chance of having a colorblind son (25%)</p>

<p>out of the questions ive seen it is like 50%</p>

<p>That’s a good question, and a difficult one to answer, I’m sure it varies by question. Hopefully collegeboard will do a good job of not being ambiguous.</p>

<p>ya if they do, I wont know what to do at all</p>

<p>also, in a pedigree is the spouses of the offspring included in that generation. Like lets say that an offspring of the f2 generation who is in the f3 generation, the person they marry who is not in that family, is he/she included in the generation?</p>

<p>and serioulsly man youare basically screwed. I mean you have one day to learn the first half of the year which is difficult. Tommorow I am going to review some stuff from the first half of the year but i just studies it like last weakend do its nothing new. And heres some adivce I got from my dad. The day before the test dont go crazy studying until like 2 in the morning. Come home from school jsut study for the next 7-9 hrs until like 1030 -1130 and immediately go to bed so your mind is fresh enoguh to work</p>

<p>well, the chance of having a color blind son would only be out of the two sons. let’s say the punnett square has two girls and two boys as offspring (which it has to have, lol). if one boy has it and the other doesn’t, then it’s a 50% chance you’ll have a colorblind son, cuz it’s only out of those two sons. if it asks the chance of just having a colorblind CHILD, it would be 25% as long as the other three children don’t have it.</p>

<p>at 217, i dont see how that would be necessary to know to answer any pedigree question they’ll throw our way</p>