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1) Emma has multiple sclerosis. If you could view her nervoussystem you would find a lack of neurotransmittersin some neurons areas where the myelin sheathhas degenerated areas where the dendrites areseverely damaged a reduction in the number ofchloride ions in her peripheral nervous system2) Leonard's mother became dehydrated during a recent illness, andthe levels of sodium in her body were significantly reduced. Ifenough sodium was lost you might expect that her nervous system wouldbecome highly activated and action potentials would begenerated continuously fewer action potentials wouldoccur in her nervous system more neurotransmitters wouldbe produced in her terminal buttons glial cells would start todegenerate and die3) If inhibitory postsynaptic potentials did not exist it would be "easier" for aneuron to fire its action potential it would be "harder" for aneuron to fire its action potential there would not be any effecton the ease at which a neuron fires its action potential it would be impossible forneural impulses to travel across the synapse4) When nicotine acts on the brain it acts like acetylcholine andbinds to ACh receptor sites causing postsynaptic potentials.Nicotine is an antagonist an agonist a monoamine a reuptake agent5) Monoamines have been associated with all of the following except aggressive behavior pain reduction schizophrenia depression6) A good analogy for the way in which a neurotransmitter binds toreceptor sites is the opening and closing of awindow a key fitting in the lock ofa door the lowering of adrawbridge the pulling of the trigger ofa gun
Mitochondria are now day descendants of endosymbiotic bacteria. How many different RNA polymerases would you expect to find in Drosophila mitochondria?
Which is more important with respect to functional groups A) they confer greater reactivity to the hydrocarbon skeletons to which they attach
Think about a dihybrid cross. If there are 100 progeny, approximately how many flies would you expect to be homozygous recessive for both traits?
1. What is the cellular/molecular mechanism to make yeast chemically competent? 2. Compare and contrast the molecular mechanisms of yeast and bacterial transformations. How are these procedures similar as well as different at a cellular/molecular ..
how A primary oocyte gives rise to
Discuss the evidence that global climate change is anthropogenic. (Provide solid evidence supporting or refuting this idea, and explain your position on the issue.)
What were the condition described by Oparin and Haldane that allowed them to hypothesize the idea of chemicalevolution? Second, describe the result of Miller and Ureyexperiment and their significance to the origins of life?
A hypothesis is an educated guess. Based on what you have learned and written about in the Introduction, state what you expect to be the results of the lab procedures.
Deinococcus radiodurans is a bacterium that was isolated from cooling ponds in and around nuclear power plants. It is highly resistant to ionizing radiation. Propose an hypothesis to explain the high level of radiation resistance and an experiment..
q1. in peaches homozygous condition gogo produces oval glands at the base of the leaves the heterozygous genotype goga
You look up in fall of the year and notice birds flying south. Describe the approaches scientists use to learn about nature. Design different measurements you could take and some experiments you might make in order to more fully describe this obse..
Using bacteriophage P22, you performed a three-factor cross in Salmonella typhimurium. The cross was between an Arg-Leu-His- recipient bacterium and bacteriophage P22, which was grown on an Arg+ Leu+ His+ strain. You selected for 1000 Arg+ transdu..
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