<p>Wait Choice A was
no antibiotics, no bacteria, no agar</p>
<p>I don’t understand why it would be 8…</p>
<p>I think there should be 8 possible gametes.
The control was an agar plate with a piece of paper not treated with antibiotics.
Yes, I’m pretty sure all cells have plasma membranes.</p>
<p>For the movement onto land question there were definitely two choices with lungs. One included amniotic eggs and the other included two other things I don’t remember. I picked the one with the amniotic egg because that enabled reptiles to lay their eggs on land and not be completely tied to the water. </p>
<p>Also, three other questions I remember were Hardy-Weinberg matching ones. One asked about new nucleotide sequences appearing in the population, which I said went against no mutations. Another asked about survival with respect to the genotype, which I said went against no natural selection. The last one said something about reproduction, and I answered random mating.</p>
<p>Yes, 8 poss gametes b/c you can have ABC, ABc, AbC, Abc, aBC, aBc, abC, and abc. There are no other poss combos.
Control had a piece of paper w/ bacteria, but no antibiotics.
Wikipedia states that all cells have plasma membranes. Prokaryotes can also have a cell wall, but they don’t have to.</p>
<p>For the experiment in urine one with like concentrations of 10^x along the yaxis, the question was like which is these is true? Is the answer something about how the bacteria became resistant because there’s a sudden drop from 4 onwards?</p>
<p>oh crap and was the thing a Frameshift Mutation? I first put down deletion because it was obvious, but then I thought that deletion was part of the bigger group under FRAMESHIFT. cuz there’s only frameshift and poing mutation right?</p>
<p>There was also a genetics question that involved a punet square with alleles for green and yellow colors. The answer was 25% yellow.</p>
<p>8 is correct (2^3); I think amniotic egg and kidneys was correct for land animals (or else reproduction and getting rid of ammonia wouldn’t be possible)</p>
<p>The answer was that some bacteria were resistant. They could not have suddenly become resistant.</p>
<p>3 wrong and 3 omitted, any chances at upper 700’s? :/</p>
<p>SwedishM8, that one confused me, because it seemed possible that either a mutation occurred or some were already resistant- i’m not sure how to tell from just the graph which one it is. Previous resistance seems more logical, so I chose that, but that’s not based off information on the graph.</p>
<p>Endotherms regulate by metabolic heat right?</p>
<p>Does anyone remember the answer to the question regarding Huntington’s disease? It said something about a father developing the disease when he was middle aged and then said there were no traces of the disease on the mother’s side. It asked what were the chances of the son later developing it? I think I said 50%.</p>
<p>No, frameshift mutation means that like… if you have THE CAT SAW, it would turn into THC ATS AW if you deleted the E. It means that the entire way of “reading” it is changed, as everything is turned into gibberish. But it was a set of 3 nucleotides that were deleted, meaning that the frameshift hasn’t changed. It’s still readable as it was before, but there have just been some deletions.</p>
<p>Yeah I think I put 50% too.</p>
<p>@soyeah The bio book and all the prep books always say that the bacteria that survive already have a resistant gene for penicillin.
@SwedishM8 and lauren926 pretty sure those are correct.</p>
<p>Couldn’t it also have been an inversion in the question with two strings of nucleotides?</p>
<p>“Such a mutation, called a frameshift mutation, will occur whenever the numer of nucleotides inserted or deleted isn’t a multiple of 3.” - quoted from bio book</p>
<p>No b/c the only diff b/n the two strands was that 1 codon on the 2nd one was missing.</p>
<p>Let’s get a collection going: copied from Lollypop, with a few additions at the end:</p>
<p>-water separation: lipids
-insulin (secretory granule)
-graph supported the route the radioactive substances traced
-graph showed how it goes from rer to golgi to vesicles
-right atrium, right ventricle, lungs, left atrium, left ventricle, aorta
-most diversity: island A
-least extinction: island A
-least immigration: island C
-two germ layers: hydra and jellyfish (II and IV)
-scar on tree: .9
-ribose, phosphate, nitrogenous base: nucleotide
-polygenic tree: dietary needs
-earthworm diagram: the three involved in segment I, the three involved in segment II, stimuli from segment III would not cause muscle contraction in segment I
-controls: temp and light (definitely only two variables!)
-lymph: interstitial fluid
-dialysis experiment, it was NOT isotonic, osmosis could have been incomplete at end of 24 hrs so answer was I only (water diffused from outside to inside)
-blastocyst in uterus
-fertilization in oviduct
-gametogenesis in the testes/epididymis
-necessary for sexual rep: two haploid (no centrioles in plants)
-allele: related proteins
-the one with the “what made it necessary to move onto land” answer choice was A.*(this included lungs, although am not sure what the other two were)
-New nucleotide = no HW equilibrium
-Genotype affects survival = no equilibrium
-Selective reproduction based on phenotype = no equilibrium
-Heterozygous for 3 genes = 8 gamete possibilities
-some bacteria were already resistant (organisms CAN’T evolve)
-Endotherms are regulated by metabolic heat
-Control for the bacteria = piece of paper w/ no antibiotic
-Concentration of bacteria was 10x higher at the end (one order of magnitude)
-Huntington’s = 50%</p>
<p>Questions to be answered:
-Different amino acid sequences - I’m pretty sure it’s a deletion; removal of three AAs in a row would definitely not cause a frameshift
-If the above is correct, then the other answer was the second sequence would have one less amino acid than the first</p>
<p>Okay, I’m gunna bombard you guys with more questions.</p>
<p>What is the diff between ectotherms and endotherms? (endotherms have metabolic heat right?)</p>
<p>The one with if neuron N was removed… (affect the muscle movement of I only right?)</p>
<p>If you touch segment 3, and segment 2 moves its…(neuron q,t,u,v right?)</p>
<p>The most likely biome was temperate grassland?</p>