@cavern101 I was accepted at numerous colleges but I am attending Cal Poly SLO.
@kinglime congrats!
@kinglime What college accepted you if you don’t mind me asking?
Omg…I barely realized there is a page 66…sorry for the spam.
Thanks!
@silverhawk5 about 80% is a 5 on the AP bio exam, so as long as your self score estimates are accurate, I’d say you’ve got a good chance for a 5. I feel like I got around your range of scores, and I received a 5 this year.
@silmaril congrats!
Can we compile all of the FRQ answers into one response so that people do not have to scroll back all the time?
Also I have yet to see an answer for 7a.
7a. " after the sensory olfactory Neuron is activated the signal created by transduction of the scent leaves its presynaptic terminal, bridges the synapse and enters the postsynaptic dendrites of the inter neuron that sends the signal to the brain by a series of action potentials that directly lead to the olfactory bulb and bypass the thalamus"
It’s been a while so I don’t know if those were my exact words; I may have missed presynaptic and postsynaptic. And I may have needed to state that it’s a chemical signal. It’s only 1 pt.
I’ll tell you what I think for the rest:
1a. Rods in the periphery of the retina help sense imagery in dim light while cones are most active in sensing stimuli in full light.
The occipital lobe in the brain interprets the signals coming from the eyes/receptors and makes an image out of them.
Motor neurons receive signals from the brain that allow you to move your body in reaction to light-dark stimuli
1b. The activity during the day is sparse, and the mice are nocturnal and very active at night.
1c. The major difference is that in continuous darkness the mice are active for shorter and more random periods throughout the day (6-8 hours) while in light they are active for most of the night consistently. This suggests that their circadian rhythm may be shorter or longer than 24 hours because of the Pattern shown in complete darkness conditions.
1d. Mutant mice that have no control over their CR would be consistently more active in the dark until being tired, and would be more active in the light as well since light would override their CR.
1e. Mice would sleep during the day and then feed at night to avoid diurnal birds of prey.
2a. Talk about the number of ATP and intermediates created in each step for the ETC in the first two, then establishment of a proton gradient allows transfer of electrons and the synthesis of ATP from those intermediates.
2b. Since all organisms do it it suggests it was found in a common ancestor. If it’s anaerobic and early earth was lacking oxygen as well (Urey-Miller) then it suggests glycolysis was present on early earth. Since prokaryotes don’t have membrane-bound organelles, and glycolysis occurs in the cytosol, and prokaryotes were first, it shows glycolysis was early on in evolution.
2c. I. 7.3x30. II. That number divided by 686 (about 32%). Excess is released as heat.
2d. Something along the lines of
“if Krebs cycle enzymes were found in the cytosol of bacteria and also in mitochondria, does this suggest that the theory of endosymbiosis is correct and that mitochondria were prokaryotes that were taken up by early eukaryotes, and then evolved to keep the mitochondria and their enzymes?”
3a. D. Polylepis is the outgroup because he has the most cytochrome differences with E ferus.
D poly, a forsteri, g gallus, e Africanus, e ferus
3b. Amino acid differences are more valid because each animals genetic code is unique and analogous structures may be the result of morphology.
- (Can't get any points on anyway, ran out of time :()
A. Metaphase and anaphase (describe)
B. Crossing over and number of mitotic divisions, or random orientation of chromosomes.
5a. If without the tip, no tropism is exhibited then the tip must be responsible for sensing the light and causing the photo tropic response. If the tip is covered and no tropism is exhibited then it proves the same thing.
5b. Light must be able to reach stem cells (permeate) to trigger auxin production and tip cells must be able to trigger auxin production in stem cells (auxin signaling must be able to reach the stem).
(I think i missed 5b, but i may get 1 of 2 points there.)
And for the last three: yay!
6a. The population is small and isolated, promoting genetic drift and inbreeding.
6b. The adult snakes provided a new source of genetic variation.
6c. There was enough resources since more offspring were produced each year and the population recovered very quickly.
7a. Not sure about this being right so:
7a. " after the sensory olfactory Neuron is activated the signal created by transduction of the scent leaves its presynaptic terminal, bridges the synapse and enters the postsynaptic dendrites of the inter neuron that sends the signal to the brain by a series of action potentials that directly lead to the olfactory bulb and bypass the thalamus"
7b. Genes can be spliced different ways as certain parts can be exons at sometimes and introns at others (which are removed). This creates unique mRNA which synthesizes unique proteins for unique receptors. Even though there are only 1000 genes, they can produce a lot of different receptors via RNA splicing. Also combinations of several synapses from several receptors that enter the brain at once lead to the perception of unique smells.
8a. Ability to create antibodies will be affected by an inability to mount a humoral response.
8b. Instead of being faster, the second response will be slower because of a lack of antibodies and memory cells and they may have to result to nonspecific defenses like fever.
8c. Nonspecific immune responses like fever will not be affected by loss of a humoral response since that is a specific type of immune response.
(Cell mediated immunity, cytotoxic T cells, and phagocytosis would also work. :))
Again thanks to anyone who finds this useful and I hope by my answers that I earned enough points!) thanks for your advice and time as well devoted towards answering this or any of my questions it means so much!
Does anyone have advice for how to do well on the exam for next year for those who made 5s or felt that they made a 5? I am worried that my teacher might not be too good.
@samuraiman26 Study right now. Don’t kill yourself during the year…You are talking to the survivors of this test…
Also remember that it is not just about memorizing; it is about understanding the concepts!
I agree with @cavern101; for me success in ap bio is all about dedication. If you want to succeed you will need to work for it.
What @cavern101 said. Also, as basic as this may sound, do the homework and reading assignments on time and keep up with the pace of the class. You will feel so much less overwhelmed at the end.
If you are worried about your teacher, ask them what their syllabus plans are at the beginning of the year. Also, pay attention to the pace at which you guys are moving through the units; for example if you’ve covered less than half of the material by semester, then it might be time to start thinking about self studying a few units.
It’s all about initiative and, like @silverhawk5 said, dedication!
Thanks again for my wrong post 
. I appreciate every drop of advice 
Has anyone had a chance to look at my FRQ answers and is it possible that someone can give me feedbackl/score my answers? Happy 4th and @samuraiman26 glad i can help
@silverhawk5 The answers you posted seem to be correct. I’m not exactly to sure on the plane hormone question but everything else seems fine.
By the way guys, would being reproductively and/or behavior isolation count as answers to Q6 letter a? The Campbell book mentioned a bit about how reproduction can be a factor for a decrease in a population. A lot of people say maybe, but I’m scared that the College Board will be like: “No.”
By the way…Happy Fourth of July!
My after test evaluation:
Anyone who thought the test was easy probably did not do very well. I, like the rest of you, did not find the MC super difficult- it reminded me so much of the ACT science. The first two FRQ were doozies (5 parts??), but I managed to get through both of them in 43 minutes. I made sure stay strict to the time per question, and I ended up putting something for each part of each question. Once I did 1 and 2, I did 8 next, then 5, then 7, and idk about the rest. I finished with 3, writing part B first, filling out the you know what, and I got midway through my second sentence in part A when time was called. Some of it did not require AP Biology knowledge, simply reasoning and logic skills (most of it on the MC). I feel like I did decently. I guess we’ll see the FRQ again in two days.
I just found out from my college that I got a 5 on it. Schools find out before students, I guess. Best of luck to everyone else and happy 4th of July!
@nolasaxman congrats on your 5! Happy 4th! Would you mind checking out my answers to the FRQ on page 66? It would really mean a lot, because if you think I’m right for most of them, then it’s one more hope that I can get a 5. Also, I ran out of time and didn’t answer 4 on accident, but I hope I at least got like 32/41; I feel much more confident on the MCQ (58+/69) thanks so much!!