<p>Barbara McClintock is famous for what discovery and in what plant did she make her discovery?</p>
<p>and while where at it:</p>
<p>Explain the process in which Auxin is used to loosen cell walls for growth.</p>
<p>I'm pretty sure the auxin question has been asked a few times already. New question.</p>
<p>What hormone is the fruit ripening hormone, and how does it work?</p>
<p>Ethylene, I think it makes the cell wall more permeable?</p>
<p>ethylene-its a gas that fills teh intercellular spaces within the fruit to stimulate ripening. It also stimulates elongation of roots, stems, leaves, and causes leaves to age and drop. It's the reason why one bad apple can spoil the whole bunch (literally), because its a gas </p>
<ol>
<li>what are the parts of a blastocyst?</li>
<li>describe the types of movement among animals</li>
</ol>
<p>runningforlife:</p>
<h2>1. McClintock found transposons that jumped around in corn.</h2>
<p>ronlivs:
1. the blastocoel, the blastopore, and the blastomere cells. there's prolly more, please add them if there are.
2. what do you mean by this? as in slithering, upright walking, opposite to opposite limb movements?</p>
<hr>
<ol>
<li>who completed the human genome project?</li>
<li>what are CD4, interleukin 1, and interleukin 2 specifically used for in immunity?</li>
</ol>
<p>I believe the human genome project is still going on? extensively at WashU nonetheless...</p>
<p>well, the initial "rough draft" back in 2001... who did that?</p>
<p>i just know it was a competition between this private company and some gov sponsored agency..the gov eventually did it first</p>
<ol>
<li>what are the stages of the menstrual cycle?</li>
<li>when does meiosis II occur during oogenisis? ]</li>
</ol>
<p>for the mvment question before, i was looking for kinesis, taxis, and migration</p>
<ol>
<li>Oogenesis, or the formation of ova in females, begins during embryonic development. However, it stops at prophase I. During puberty, the cells complete meiosis through telophase II.</li>
</ol>
<p>I can't answer the first question.</p>
<ol>
<li>menstrual cycle occurs cyclically every month (is it 28 days or something??). Follicular phase: follicle develops due to increased levels of estrogen and FSH. Ovulation: follicle breaks up and secondary oocyte is released. Luteal phase: follicle develops into the corpus luteum as more estrogen and progesterone are released. This makes the endometrium thicken. Menstruation: lining of uterus is shed.</li>
</ol>
<hr>
<ol>
<li>What is balanced polymorphism?</li>
<li>Describe translocation of sugars in a plant.</li>
</ol>
<ol>
<li><p>the maintenance of differnet phenotypes within a population; the three kinds are heterozygote advantage, hybrid vigor, and minority advantage. IT contributes to variation and speication</p></li>
<li><p>Translocation is works on the "pressure-flow" hypothesis. First, sugars enter sieve-tube members via active transport from their site of production (source). Then, since the solute concentration in the seive tubes is high, water moves in by osmosis. This then increases the turgor pressure, which forces the water and sugar down sieve tubes to sinks, where the pressure isnt high. There, the sugar is being utilized and water is diffused out of the cell. </p></li>
<li><p>what are epihytes and name some</p></li>
<li><p>which phylum has organisms with a nerve net and gastrovascular cavity</p></li>
</ol>
<ol>
<li>epiphytes are plants that live in the air. you can find a lotta epiphytes in teh tropical rain forest where they dangle from trees. orchids and bromeliads are examples of epiphytes.</li>
</ol>
<h2>2. cnidaria</h2>
<ol>
<li>explain how conjugation works in protista.</li>
<li>describe a north-south cline. give an example.</li>
</ol>
<h2>Hm, from what i remember conjugation occurs in prokaryotes, which are in the kingdom monera. On that note, conjugation is the process by which genetic material is exchanged from one bacteria to another An f plasmid in each bacteria promotes the formation of a pilius (the intracellular channel). This pilius allows for the transport of genetic information from one bacteria to another--plasmids can be transmitted (r plasmid-resistance) as well as a replica of the circular chromosome that can be incorporated through recombination). If there was to be conjugation among eukaryotes I'm assuming it would inolve the transport from cell to cell, expelling from the cytoplasm and then invagination.</h2>
<h2>north south cline (won't ask you on the bio ap--highly doubt it): chromosome frequency based on polymorphism (one gene many alleles) in a population.</h2>
<h2>Honestly, I think we went over everything in this room; its gotten to the point where we're repeating ourselves--over and over. I think it would be better to show Bio AP multiple choice questions instead. Anyway, I have to go finish a project...</h2>
<p>1.In what protein structure are disulfide bonds located in?
2.What is the difference between exocrine and endocrine system?
3.The Corpus Luteum produces more_<strong><em>, in turn producing more</em></strong></p>
<ol>
<li>Disulfide bonds are found in tertiary structure of proteins between two cysteines.</li>
<li>Exocrine glands (do they really make up a system) transport various fluids to the body surface, such as sweat, mucous, and breast milk. Endocrine systems are responisble for internal, hormonal regulation of various things such as homeostasis, puberty, metabolism, fight or flight, etc.</li>
<li>not sure actually... don't the secretions of the corpus luteum (estrogen and progesterone) actually exert neg. feedback on LH and FSH? Maybe i forgot a hormone... o well...</li>
</ol>
<hr>
<p>1.What is eutrophication?
2. How are savannahs maintained?
3. Describe avain gastrulation.</p>
<ol>
<li>Eutrophication is the rapid addition of phosphates to a body of water (e.g. a pond or a lake). The process of adding phosphates is natural, but certain human activities (e.g. runoff from fertilizer) can dramatically speed up the process.</li>
</ol>
<p>An algal bloom occurs during the early stages of eutrophication. When these algae respire at night, a lot of the dissolved oxygen in the water is used up. When they die, detritivorous bacteria consume their remains, causing the oxygen supply to be further depleted. Eventually, a lot of the fish in the water end up dying, as well.</p>
<p>I see no reason why this topic should become dead amidst the surge of post-exam threads.</p>
<p>Account for the 36 ATP formed in aerobic cellular respiration.</p>
<p>ahh the joys of ap bio....</p>
<p>Actually I loved that class...though I forget everything now...</p>
<p>just felt like commenting...</p>
<p>2 from glycolysis
2 from krebs cycle
32 from ETC </p>
<p>How would you distinguish a plant using just photosystem I rather than both photosystem I and II? (what kind of experiments would you perform)</p>
<p>Whatever happened to the interest of AP Biology? Are most of you guys taking AP US History, as well?</p>
<p>In any case...</p>
<p>Cyclic photophosphorylation uses only photosystem I whereas noncyclic photophosphorylation uses both photosystems I and II.</p>
<p>See if the electrons are recycled.</p>
<p>Ah, yeah sorry buddy--my fidelity leans me toward American lately. I'll definately be on Sunday night, and possibly saturday night. I also have my SAT II's to worry about. I Hope for the best, best of luck, see you eventually!</p>