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You are asked to determine the number of viable organisms per ml in a sample. The sample is thought to contain between 6.4*10^6 - 8.4*10^6 organisms per ml. How would you do this with least amount of error? Diagram the procedure and dilution scheme that you would follow. Indicate which plate is likely to be the best plate to count.
Think about the nature of negative-feedback control and the function of the respiratory system, what effect do you predict that a decrease in CO2 in the internal environment would have on how rapidly and deeply a person breathes?
How can caffeine cause a muscle fiber to contract and generate force, but without generating an end plate potential or action potential of the membrane?
Give two mechanisms that allow the nerve cell to recover from the effects of an action potentials and neurotransmitter release.Say how the mechanisms cause the cell to recover.
Which of statements concerning the sperm might be true. These data let you to infer that the species belongs to which protist groups.
Explain whether the inflammation a natural immune response? Explain if it is a bad thing? Why or why not? Describe in your own words the inflammatory process.
A 3-factor cross in Salmonella typhimurium was performed using bacteriopage P22. The cross between an arg-leu-his- recipient bacterium and bacteriophage P22,
Two closely related species of wolf spiders live together in northern California. However, meadow wolf spiders are only observed in meadows and forest wolf spiders are only observed in the forest. Both species are found near forest-meadow edges.
In enzyme lab. Manganese Dioxide does not come from a living thing. Is it a catalyst (define catalyst)? Is it an enzyme? Describe. Why did we test the hydrogen peroxide with manganese dioxide.
ndicate with an arrow the direction that DNA Polymerase would elongate the "primer" DNA strand on this double-stranded DNA molecule in the presence of dNTPs.
In our experiment, we had 2.0 mM solution and we diluted different volumes of it into sodium carbonate before reading in the spec. These were our dilutions.
Explain why dihybird crosses of yeast always results in predicted phenotypic ratio but results of similar two crosses in eukaryotic organisms
So far while surgery was performed on his neck, the surgeon might not find the parathyroid glands at all. Where should the surgeon look next to find out the tumorous parathyroid gland.
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