<p>Did they give you a chart or something? There will be a point where no reaction will occur, but not until a certain temperature.</p>
<p>100C is not enough to break the bonds holding the enzyme’s shape. Think of it in terms of water, 100C causes the water to change state but doesn’t break it down into hydrogen and oxygen gas.</p>
<p>Thank you so much! It all makes sense now.</p>
<p>Which of the following characteristics indicates that molluscs are more closely related to arthropods than to chordates?</p>
<p>(A) Presence of a skeleton
(B) Type of respiratory structure
(C) Pattern of coelom formation
(D) Segmentation
(E) Symmetry</p>
<p>It’s a pretty easy guess, but what is a coelom?</p>
<p>C</p>
<p>I posted what a coelom is in this thread awhile back for FRQ practice. Do a thread search for “coelomates” and it should come up.</p>
<p>Aren’t arthropods, mollusks, and chordata all coelomates?</p>
<p>yes! platyhelminthes are acolomate, nematoda and rotifers are pseudoclomate FYI. Can anyone explain embryonic development?</p>
<p>1) First the sperm fertilizes the egg to form a zygote.
2) Then the zygote begins cleavage divisions (the cells get smaller). This can be either radial (deuterostome) or spiral (protostome). A bunch of cleavage divisions -> morula, a solid ball of cells.
3) A hollow forms inside the morula and it becomes a blastula. The hollow cavity is the blastocoel.
4) Gastrulation is whne some of the cells invaginate. This is when the 3 germ layers form. The inside cavity is the archenteron; the opening into the archenteron is the blastopore.</p>
<p>I’m having a panic attack. </p>
<p>I think I’ll just go over the labs, DNA replication, and animal systems, then call it a day. No use cramming now; I surely don’t know it.</p>
<p>Do I really have to know biological diversity?</p>
<p>I really want to skip that stuff.</p>
<p>Aren’t arthropods, mollusks, and chordata all coelomates?</p>
<p>Yes, but arthropods and mollusks are protostomes, meaning their coelom forms from the mouth; chordates are deuterostomes, so their coelom forms from the anus.</p>
<p>shouldn’t all of the enzymes have been denatured by the high heat?
so…wouldn’t they NOT perform any reaction at all?</p>
<p>In addition to the reason already given, all reactions technically are constantly occurring, enzymes just lets them happen a lot faster.</p>
<p>Just another random mnemonic: You drink pepsi while watching the Chiefs game; chief cells in the stomach secrete pepsinogen.</p>
<p>^ cute i will def remember that!</p>
<p>This may sound a little stupid, but since I’m self-studying AP Bio there’s no teacher to answer my questions
I noticed that if one adds up the max. points awarded for each section, the full mark for each essay question is usually around 12 or so.
So is a 10/12 also counted as a full mark essay, or do I have to get full marks in each section in order to get a 10 for that question?</p>
<p>Basically, you can only have a maximum of 10 points per FRQ, even if you fulfill all the opportunities to earn a point. They give you more than one way to earn the 10 points, which is why you see a total of more than 10 possible points. If they only had 10 possibilities for each answer, chances are that very few people would hit every exact point that the rubric requires.</p>
<p>The way they do it makes it easier to earn maximum points, in a variety of different ways.</p>
<p>Essentially, if you fulfill all 12 opportunities to earn points, you still only get 10 points. Once you reach 10, or the maximum of each section, the reader will move on to the next question or the next section, respectively.</p>
<p>Basically, you try to get as many points as you can. There are limits to the amount of points that actually count per section. The most points you can get as a whole is 10 points per question, but you need to get at least one point in each section.</p>
<p>^</p>
<p>What happens if you get 0 points in a section?</p>
<p>^ Then you can’t get 10 points, even if you make them in other sections.</p>
<p>^Then the AP grader laughs at you.</p>
<p>I will be drawing some bad-ass pictures…only got two more days of H.S. left and I’m a Business major. I couldn’t care less about Bio! Hurray High School is OVER!!!</p>