<p>Sounds cool, I'm all up for a chatroom for discussion</p>
<p>invite me or message me and let me know for chatroom discussion, i think just studying cannot help, but talking about it and ideas flowing will help the brain absorb ALL 55 chapters worth of content-insane!</p>
<p>sounds good - invite me 2 please :)</p>
<p>mk done with AP Lit, on to Bio :-D </p>
<p>What time do you guys want to setup the chat? I'm up for any time. Even now :-D</p>
<p>Pm mee!</p>
<p>Same here. I didn't like lit at all but that is my own fault. If I would have had three more minutes I would have bubbled in like three I wasn't sure of. As is I left 6 blank :( And I went blank for the last essay. It was BAD.</p>
<p>Anyway, how do we do the chatroom thing?</p>
<p>if someone starts one can they just post its name here? thanks.</p>
<p>A: Initiation, elongation, termination. Ok, so here goes nothing...
Initiation: the large and small subunits locate the start codon on the mRNA strand (is it AUG?) and attach. I think the 5' cap thingie also helps it bind in the right spot. A tRNA strand with an anticodon is able to attach (if the start codon is AUG, then the anticodon of the tRNA would be UTC). Every protein starts with the same amino acid, but I forget which one... someone should remind us maybe? Well anyway... the ribosome moves to the next three nucleotides and attaches the corresponding tRNA with a specific amino acid attached, which then binds to the first A.A. via a peptide bond. This occurs until the ribosome comes to a special stop codon, when it dissociates from the mRNA. The polypeptide chain then spontaneously folds or is often taken in by a chaperone protein to ensure proper folding conditions... and then it's ready for use! Ta da.</p>
<p>Q: Describe different processes or activities used by animals to maintain a stable body temperature.</p>
<p>A: Regulation of stable body temperature is extremely important in maintaining homeostasis or internal balance in the body. For humans, the skin is the body's largest organ with 2.5 million sweat glands that regulate body temperature with loss of water and salt through sweat. Also, the body regulates temperature by harvesting energy in different forms depending on the organism type. Endothermic animals have more stable temperatures compared to ectotherms that can move to different regions on an area to regulate temperature. For example, some animals including reptiles may sit on a hot rock to increase body temperature by absorbing heat reflected from the sun, while other animals may choose to lie in the shade to cool off and decrease body temperature. Other animals swim in water near lakes and ponds to cool off and regulate body temperature. </p>
<p>lol that's all I could think of without going to my notes, which was hard, but I guess that's how it will be Monday, so we all must prepare...</p>
<p>anyone can further elaborate or correct my answer, but here's another question:</p>
<p>Q: Regarding the AP Biology 8 major themes, one major them is structure and function. Describe the structure of nervous systems that have evolved over time to correlate to their function.</p>
<p>my question can be more specific: Elaborate on nervous structures on different organisms including the evolution of cephalization with ganglia...</p>
<p>okay so for the essays, I think we should make a HOT TOPICS list to review for the weekend: here is what I have so far from ppl that messaged me and teacher predictions:</p>
<p>ESSAY REVIEW-MAJOR HOT TOPICS TO STUDY IN LAST DAYS!!!</p>
<p>POSSIBLE LAB ESSAYS: Lab #10, Lab #9, Lab #5, Lab#2, Lab #12.</p>
<p>PAST Year/Essay on Lab
98/1&6
99/4
00/2
01/12
02/1,6,11
03/7
04/4
05/1
06/9
07/6</p>
<p>Evolution/Speciation</p>
<p>Nervous System and Reproductive System</p>
<p>Cell/Molecule one?</p>
<p>Chemisomosis, membrane related to ATP or cell respiration with lab 5</p>
<p>Maybe heredity...</p>
<p>water, transpiration, also ties into Lab 9</p>
<p>[url=<a href="http://chat.parachat.com/chat/code.php%5DChat%5B/url">http://chat.parachat.com/chat/code.php]Chat[/url</a>]</p>
<p>go here
look for a chat name ap biology</p>
<p>the password is cc</p>
<p>i will leave it on until monday!</p>
<p>To Futuredr08, could you please be just a little more specific?
In the mean time, I'll ask another question. [=</p>
<p>What are the 3 factors that affect enzymatic activity?</p>
<p>temperature, ph, and hmmmmmmm catalyze thingy?</p>
<p>amount of enzyme, amount of substrate, temperature, pH, but I think the key to enzymes is how they work from inducible fit to lock and key model to
lowering the activation energy causing the reaction rate to increase</p>
<p>is that right?</p>
<p>clarification/specification: Cephalization has been a major evolutionary theme throughout biology as hydra with nerve nets, the simplest nervous system, led to the human brain. Describe the different nervous systems in organisms and how they have evolved....sorry I was trying to ask about different brains/nervous systems in varying organisms, but I guess that's too general/nonspecific, so here's the new one:</p>
<p>The brain and nervous system work with other body systems to regulate homeostasis. Describe how the nervous system works along with other body systems involving negative/positive feedback with other systems.</p>
<p>Possibilities:
Endocrine system: hormone activity/body regulation/homeostasis
Muscular system: movement/nerves/action potential
Lymphatic System, Reproductive System, or Defense system</p>
<p>any more questions and answers?</p>
<p>lol since nobody liked my question here's another one, that I hope is straight-forward: </p>
<p>What are the major properties of water and why is water such a versatile molecule?</p>
<p>LAST MINUTE AP BIO questions:</p>
<p>so how many out of 100 MC q's should be correct to get AT LEAST a 4 or 5 and lets say bomb essays or do fairly well ???</p>
<p><em>I'm thinking about leaving 10-20 confusing ones blank...is that a good idea?</em></p>
<p>and how well do you need to do on the essays, i know each is 10 points, but surely you can't get 5 on each and still get a 4, is that a 3??? (what are the national averages, do they curve essays?)</p>
<p>ugh... water is such a broad topic.</p>
<p>Let's see. Water has high specific heat, partially due to its hydrogen bonding, which means it does not heat up easily, which can help to keep the homeostasis (body temperature). It's a polar molecule, meaning it can dissolve ionic compound with ease (like NaCl), which also makes water the ideal solvent and the ideal enviroment for chemical reactions. it has both cohesion and adhesion, which helps with the movement of water through plant vascular system (cohesion tension model & transpiration). all this is just sort of a molecular stuff... I guess you can also tie in that it has strong surface tension, which is important for some organism living on water, and that its solid form is less dense than liquid, which is important for fishes. </p>
<p>Alright, my question.</p>
<p>Explain the Counter-Current flow mechanism and how it helps the mammals to conserve water (excretory system). sorry for all the english mistakes; it's really late.</p>
<p>The counter-current flow mechanism is prevalent in fishes that have gills as excretory and circulatory structures that maximize diffusion of oxygen into blood and removal of waste including carbon dioxide into the water. It helps conserve water by retaining nutrients and minerals while eliminating waste including ammonia and uric acid. This system has been highly efficient for fishes as gills are adapted excretory structures for underwater animals. However, gills can be internal and external. </p>
<p>Moreover, other common excretory structures include the nephridia in earthworms, and malphigian tubules in insects. Kidneys are the excretory structures in mammals...lol IDK how else do you get bonus points on these essays??</p>
<p>so, all in all, what do you think are going to be the biggest topics on the test?</p>
<p>quick question -- is it okay if i just memorize the abbreviations of hormones, chemicals, etc. or should i write them out in the essays? wat about spelling errors?</p>
<p>btw i found a great site for lab review: PHSchool</a> - The Biology Place</p>