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Briefly explain the idea of differential centrifugation. What cellular organelles fraction out during each round of centrifugation?
If a cube representing the cell is 5um on a side, compute the surface area to volume ratio, and explain why this is or is not a good size for a cell.
Explain why does nitrogenous waste build up in cellular fluids? Discuss the tradeoffs between water loss, energy efficiency and toxicity with the excretion of ammonia, urea, and uric acid.
Explain an experiment to test this hypothesis. Be explicit about the methods you will use, the setting, the time that the experiment will last, and the variables you will measure.
In another population of butterflies, you do a survey and find that out of 5000 individuals you examine, only 4 had curly antennae. What would you expect the frequency of heterozygotes to be in this population? What about the frequency of homozygo..
Suppose that you are given a mixture of proteins that you examine by standard 2-D electrophoresis, with the following results for isoelectric points and apparent molecular weights.
Choose two organelles and compare them relative to structure and function. Describe what would be the specific probable effects on the cell if each of these organelles were lost.
On the coding strand above, indicate where you would expect FRP to bind to the DNA. In one sentence, describe why the decision makes sense.
Suppose that Mendel looked simultaneously at four traits of his pea plants. If he crossed a homozygous dominant plant with a homozygous recessive plant.
Two statements that introduce the problem that your hypothesis is addressing. This problem may have to do with specie introductions, or pollution, or a question of natural history strategies, etc.
Show (using both graphs and words) how the equilibrium theory of island biogeography could used to support the conclusion (despite the apparent contradiction). In addition include two other plausible explanations for this pattern.
If NAD+ is an electron acceptor that becomes NADH and the NADH then donates a proton to ATPase, should not NADH now become NAD- since it lost it's proton but still has electron?
ATP synthesis in chloroplasts is very similar to that in mitochondria: Electron transport is coupled to the formation of a proton (H+) gradient across a membrane.
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