<p>This is my school's first year of AP Bio so I didn't have a very good teacher (never made it to body's systems), meaning I'm trying to learn most of this material for the first time. I'm dead tired from cramming and there seems to be so much information for each of the systems in Cliffs. Which system would you advise I study most? Cliff's says 14% of the test is based on animal structure and function. Are these more general questions on how the system works or specific questions? For instance, will I have to know what malpighian tubes are?</p>
<p>I hate AP Bio...Well, what I really hate is how we never learned anything of substance in the class. Due to time contrsints, we also never did any labs.</p>
<p>it seems to be in a general agreement that endocrine system is very important. with that said, i suggest that you skim and learn them all because all of them are pretty much equally important. there is a very good chance that these systems will be on the Free Response, such as how the body keeps homeostasis. thus, you should know them all.</p>
<p>Definitely know endocrine and reproductive systems. In fact, in Cliffs there's an entire damn chapter devoted to reproduction, so that says something. Know the menstrual cycle, especially.</p>
<p>I'd say know the nervous system, for sure. Learn how muscles contract.</p>
<p>Review the circulatory and digestive systems, and learn how nephrons function.</p>
<p>...Other than that...I don't know how important the respiratory system is, or whatever else I didn't mention.</p>
<p>Apparently the Loop of Henle (excretory) is important...</p>
<p>I still have to review excretory, nervous, immune, reproductive, and nervous...I've only done circ, resp, digestive, (parts of) muscular</p>