atp is a stored form of energy. how can it produce energy if it is energy?
@mastersuperfan I feel like the one about the Calvin cycle enzymes is the answer that said they evolved before the light dependent reactions because the questions is framed by saying that there are nonphotosynthetic organism that have the enzymes but don’t use them for photosynthesis therefore it would be relatively obvious that they are used for other functions in plants. Rather I believe they want you to conclude that because at had and bacteria evolved before more conplex multicellular organism such as plants that they acquired the ability to photosynthesis through the utilization of the Calvin cycle enzymes which evolved earlier in archae and bactiera
And I believe that the atp answer is the one about biosynthesis
For the Calvin Cycle one I put the answer where it said they evolved from it. The answer didn’t mention endosymbiosis
@neehal120 “therefore it would be relatively obvious that they are used for other functions in plants.”
Then I’d argue that since it’s the most obvious, it’s the most logical hypothesis of the list. I’ve learned not to overthink bio SAT questions too much when they ask for the most “logical” or “reasonable” conclusion/hypothesis.
And I also repeat: “Plus, no known archaea perform photosynthesis.” I feel like if they truly wanted us to give the endosymbiotic theory as our answer, they would not have included archaea in the question.
It’s really up in the air. These are the types of questions that at this point are too far off in our memories to really be answered definitively. However, the test IS graded on a curve, and I’m sure most people who took the test had trouble with these questions. I wouldn’t worry about it.
@Spiog I hope you’re right. The curve better be forgiving because I can’t rely on luck to get me my 800 after getting two questions wrong…
I also put biosynthesis because ATP technically in itself isn’t energy, the energy is in the bonds, so I thought provides made most sense but tbh it was worded really strangely
I thought the test was pretty spot on in terms of content, but the phrasing of a bunch of questions was realllllly ambiguous (kinda beyond the realm of just trying to trick us imo), but I think the curve should be pretty decent (all the people I’ve talked to had trouble on it, even the ones that aced AP Bio)
@mastersuperfan but I’m not saying that it solely relies upon the theory of endosymbiosis I am simply saying that when plants acquired the enzymes that were not photosynthetic organisms through endosymbiosis is only one part then they evolved to utilize photosynthesis through the use of the enzymes. Also the fact that there are used for other functions I was simply referring to other organisms not necessarily plants.
Anyone have any accurate curve predictions? I feel that many individuals here are overestimating the generosity of ETS due to their own misinterpreting or lack of understanding of questions. I’d say that although this certainly wasn’t an easy exam, it was extremely fair. Thus, the blue book test’s curve should be a good indicator of the curve for today’s test. Anyone agree?
@brownaspirant “it was extremely fair”
I disagree heavily. Questions like the one about the Calvin cycle enzymes are vague, convoluted, and arguably have multiple correct answers. Questions like the ATP function are also unnecessarily confusing and vague, and to select an answer I had to think about what the test writers most likely wanted to hear me say. It’s very easy for different people to interpret the wording of questions and answer choices in different ways. I’ve done some old practice tests before and they’re certainly much more fair than this one.
I’m not saying that it’s so unfair that the curve should be really really low, but it should definitely be more forgiving than usual.
I took the Bio M Sat Subject Test today. Here are the curve projections according to the Blue Book and an accumulation of data from other Bio subject tests:
Biology E: 80 questions
-3: 800
-4: 790
-5/-6: 780
-7/-8: 770
-9: 760
-10/-11: 750
-12: 740
-13/-14: 730
-15/-16: 720
-17/-18: 710
-19/-20: 700
Biology M: 80 questions
[A little bit more lenient than E, but around the same. -20= 700, -3= 800]
I personally thought the bio test wasn’t too bad in terms of material, but the way they worded the questions was confusing at times.
@mastersuperfan I wouldn’t overestimate the curve either. I’m not saying it was completely fair (it should test your knowledge not your ability to decipher poorly-worded questions and answers), but I doubt it will be more than -4 for an 800. You never know what they’ll do though…
What did you guys put for the question where it asked what should the scientists first step be to preserve the avain natural diversity of the organism
@neehal120 I said to trap them and release them in unpopulated areas, but I believe I’m wrong; most of my friends chose E, research and study them first. After all, the question did specify the first step only.
Adding on to what other posters have said, the Bio test doesn’t have the most favorable curve, so I would say maximum three wrong is an 800.
I probably got a good 15 wrong. Not to mention the one I omitted. Sigh…
same sighh @photogeek8 first 20 questions I reallllly thought I was killin it, then it all went downhill form there 
how does the curve work? are questions that people get wrong omitted from the final score or is it a set curve for all the tests?
I did legislature for bounty hunting. The question was asking about natural biodiversity… something pointed me towards bounty hunting rather than researching but I might be wrong.
@mastersuperfan i got the same answer too but I’m not sure whether it’s wrong or right