Transcript Document
Included here are the remaining questions from previous Biology EOCs. They have been “retired” for use as sample “practice” questions. It is important to keep in mind this is NOT about memorizing the answers to these questions (wouldn’t do you any good if you did since they’re retired) but rather… --get a “feel” for the format --consider the topics (what biological concepts are they addressing?) --for the extended-response questions, it often isn’t as much biological concept as it may be a scientific approach to problem solving Hope you find this useful…(feedback is welcome!!) Hint…use the up/down arrow keys to navigate this power pt. None of these multiple choice questions require knowledge of the scenario. They are simply items designed to measure your grasp of biology concepts. Take a look at #7… …if you recall your concepts from CH 8 (transcription & translation), this should an easy one. DNARNAamino acidsPROTEIN!! “How do plants…?” Actually, how does ANY living thing…? B is bogus as the primary thing plants get from soil is WATER (not proteins!) C sounds like something from a Harry Potter novel, “MAGIC THAT IS!!” D …there ARE proteins in seeds but not enough to grow an entire plant! It would be a violation of the conservation of matter, for Pete’s sake! EDITORIAL COMMENT: I can see why this one was retired…it’s vague, at best. But you can still learn something from it… PURPOSE: To increase the garden’s food mass Applying logic to the biology… Choice A : Even if you discovered the answer, how would you be able to use the knowledge to increase food mass? Force-feed the plants more carbon??? Choice C : The purpose wasn’t to grow high-protein plants but simply more mass Choice D : Large seeds do NOT mean more plant mass Choice B : This knowledge could be applied to the entire garden and in most cases result in better crop yields (it’s WHY we “fertilize” our gardens) After everything you learned in CH 11, this one’s a breeze… Choices A, B, and D are all part of the PHOTOSYNTHETIC process…NOT respiration If you weren’t aware, “ATP” or *AdenosineTriPhosphate, is the primary “ENERGY molecule” employed by living things…produced in the MITOCHONDRIA of cells, the same way CHLOROPLASTS of plant cells are in charge of photosynthesis Another (2-pt) extended response item…which seems to focus on RELIABILITY RELIABLE means REPEATED TRIALS…a REPEATED trial only counts as truly REPEATED if… …EVERYTHING REMAINS THE SAME as it is run again. What aspects of a greenhouse make it UNRELIABLE? Let’s try the skip-ahead-and-read-the-questions technique …here, read these, THEN look at the scenario on the next slide (which, in the test format, came BEFORE the questions) At first this seems like a question you’d see on a READING HSPE…yet it involves concepts you learned in CH 6 (natural selection/evolution). After reading the scenario you learned 84% of the finches died because their beaks were unable to access the remaining food following the 1977 drought. Only finches with bigger beaks (16%) survived…eventually dominating the finch population (“medium ground finch”, that is). It had nothing to do with lack of water (A) or emigration (C) and Choice B… …as we’ve learned, SPECIES DON’T EVOLVE…survival-of-the-fittest means POPULATIONS EVOLVE!!! Frankly, this question can be answered WITHOUT READING THE SCENARIO. It is simply a species-interaction question (CH 14). There are errors here… “a new bird species” ? We know nothing about it. If anything the word “would” should be changed to COULD… D : predation by the new bird is a possibility but it would DECREASE the finch pop A : if finches reproduce they wouldn’t DEcline, if a new bird occupies finch breeding grounds, finches WOULD decline (vague choice) B : also vague…with a new bird on the island the finch might have an adaptation that allows it to survive better than the new bird but why wait for a new bird? …ummmmm….a math question? OK….whatever…. 720 finches / 80 acres = NINE Skip-ahead-and-read-the-questions technique again… …here, read these, THEN look at the scenario on the next slide (which, in the test format, came BEFORE the questions) Again, scenario-not-required…this one’s from the concepts in CH 7 (genetics) Choosing between A and B, B might be correct IF you were talking about GAMETES …but you’re not. So glad I read the scenario because THIS question…oh, wait…never mind. Cell’s liquid environment Builds proteins/hormones/enzymes out of amino acids Contains DNA This question covers CELL STRUCTURE & FUNCTION…an area THS Inquiry is weak on. Technically, it is part of the 9th grade Inquiry program but memories get fuzzy… Mitochondria are the energy-producers of cells, “burning” glucose (by respiration) to build ATP molecules…producing carbon dioxide in the process. Plants complete the Carbon Cycle with the chloroplast, using the CO2 + water to produce oxygen + glucose which is what the mitochondria use, the oxygen to burn the glucose…and so on… FINALLY…a scenario-based quest---NOT….oh well… Carbon Labs, CH 11, Station 6: Plants “What are plants made of?” “THIN AIR!!!!” 2 PT question ZERO PTS ONE PT TWO PTS Let’s take a look at that “Salmonberry Scenario” (remember from Part 1?) Remember this one? Glucose & oxygen are bear INPUTS water’s an OUTPUT but not needed-for-respiration A scenario-independent question… (as in, “who cares about the scenario?”) After all, what do think plants make all that Bear “output”?? Oh. On a molecular level. glucose out of in the first place!? Being heterotrophic, bears only undergo cellular respiration (unlike plants which, being autotrophic, BOTH respire AND photosynthesize)…so… (BEAR) RESPIRATION: INPUTS OUTPUTS glucose + oxygen carbon dioxide + water (SALMONBERRY) PHOTOSYNTHESIS: INPUTS (used) OUTPUTS carbon dioxide + water glucose + oxygen Think about your scientific reasons… …connect DATA from the table to each reason… …then advance to the next slide… A 2-pt response addresses BOTH habitats, a 1-pt response only answers for one REMEMBER THE BULLETS: you need BOTH a logical reason AND DATA!!!!!!!! Two more examples Above, another scenario-independent item, this one is straight out of CH 14…COMPETITION LIMITS the size of populations!! (going after the same resources)…besides, A, B, and C are, well, LOL choices! Below, choices B, C, and D are all EPIC shifts in the ecosystem. Only A represents an event of “balance”…the coming-and-going of life (aka equilibrium). Think about 2 possible “problems” (constraints or limitations) …and HOW each has its limitations… …then advance to the next slide… Here are some examples… Excellent example of a question of Cellular Processes content D is the answer….IF IT WERE WATER, and it were moving in the opposite direction. And since OSMOSIS is a form of B that’s out too. Diffusion does not involve crossing a membrane (it’s just stuff spreading out) so that leaves C… to move (non-water) molecules ACROSS membranes, often AGAINST a gradient (low to high) is ACTIVE transport I don’t know about you, but I kinda like A the best…ask me why… LAST QUESTION!! On a piece of scratch paper, write out your procedure, Then double-check it against the bulleted list Then check out the remaining slides… An example of a POOR answer… An example of an excellent answer. Why? Check out the rubric on the next slide… Well, that’s it for practice questions. Obviously, the actual EOC will contain assessment items on additional topics as well as additional topics on the same concepts. Looking back, you saw questions from CH 6, 7, 8, 11, and 14. Undoubtedly, there will be more questions centered around Biology’s Grand Unifying Theory (evolution), more genetics questions, and more cell structure & function. There will be more question about species interactions (symbiosis, etc) as well as food webs, bioamplification, and energy pyramids. There should be questions from CH 15 (resources) and CH 16 (engineering design process) and of course, complex systems. Bottom line, pay attention to BULLETS in extended response questions, use the process-of-elimination in multiple choice, use your knowledge gained combined with logic and in almost every case, go with your first inclination…it is usually right! GOOD LUCK TAHOMIE!!