<p>OK, just like last year you post a question someone answers it the person who answers it posts another question and someone else answers it and then posts and so on and so forth. The test is coming soon so studying now isn't such a bad idea and the questions aren't to complicated. So I'll go first.</p>
<p>Where does the Krebs Cycle occur and how much ATP is produced once the cycle is done?</p>
<p>It occurs in the Mitochondrial Matrix. </p>
<p>The Krebs Cycle make 24 ATP's.. Im not sure if the conversion of Pyruvic acid to Acetyl CoA is included.</p>
<p>I dont think it is. So including the conversion it would be 30 ATP. </p>
<p>Can someone please check?</p>
<p>QUESTION: Describe the following processes: Transcription, Translation, Transduction, Conjugation and Transformation. </p>
<p>Those are the most confusing ones that people stumble upon AP Tests.</p>
<p>^ that's definately wrong I believe only 2 atp is produced for each of the previous cycle so there was a total of i believe 8.
Definately not 24.
Most are produced in the last step oxidative phosphorlation (might of spelled it wrong)</p>
<p>What is the adaptation that red algae have that allows them to survive in the deepest parts of oceans where UV light is scarce?</p>
<p>Red algae contains an accessory pigment called phycobilin that enables them to absorb blue and green wavelengths of light (these are the only wavelengths that penetrate deep into the ocean). They can live at a depth of up to about 260 meters.</p>
<p>Question: What kinds of topics about evolution are going to be covered? Also, please explain allopatric and sympatric speciation.</p>
<p>Eh I'm not taking AP bio but</p>
<p>Transcription: DNA to RNA
Translation: RNA to amino acids</p>
<p>Adding those two gives Central Dogma of Biology or something.</p>
<p>Allopatric is with a physical barrier and sympatric is without a physical barrier. Some examples of allopatric are genetic drift and founder effect.</p>
<p>Sympatric speciation is believed to be due to disruptive selection. Heterozygotes are favored against, resulting in 2 extreme populations. this can sometimes lead to speciation.</p>
<p>Pyruvic acid-> acetyl CoA produces only NADH, H+ and Co2. NO MADE OR USED ATP HERE.</p>
<p>The actual Krebs cycle produces 1 ATP per pyruvate (in the form of Acetyl CoA). So there is a total of 2 ATP molecules produced per glucose molecule in the kreb cycle.</p>
<p>@grayfalcon:</p>
<p>AP Bio is WAY more detailed than that. Nice try though.</p>
<p>All together now, we should stop beginning new threads and read through or maybe a moderaltor will combine the threads. Basically all threads are about the same questions. Again I bump.</p>
<p>Ok, here's a question, what is produced in the archegonia and antheridia of mosses, and when those 2 things get together, what do they produce? Also, include the chromosome numbers.</p>
<p>Egg and sperm respectively. Fertilized egg (zygote), which becomes a seed. Egg and sperm are N, while the integument of the seed is 2n and endosperm is 3n. The sperm and egg cell before meiosis is 2N (I forget what they were called).</p>
<p>how many times should I read the Cliffs over? people say that they basically had it memorized word for word and got a 5...however, that is easier said than done.</p>
<p>afruff, you need to study the alternations of generations in mosses, ferns, gymnosperms and angiosperms. In mosses, the dominant generation is the green gametophyte generation. They are male and female. (2n) The archegonia produce an egg, and the antheridia produce sperm. (By meiosis) Water from rain washes the sperm into the archegonia of a female gametophye, and a zygote forms. This is 2n. This gives rise to the sporophyte generation. The sporophye generation produces spores by mitosis, which are released into the air. These, when settling on the ground, grow into the new male and female gametophytes, which are 2n.</p>
<p>Only gymnosperms and agiosperms produce seeds. The 3n you are talking about occurs in flowers (angiosperms). </p>
<p>Work on this stuff.</p>
<p>Oh sorry, didn't notice the word "mosses".</p>