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QUESTION 20: If you are artificially stimulating a nerve in a science experiment using a voltage source to produce action potentials in a single isolated neuron and monitoring voltage in the neuron's axon, what happens? You stimulate the neuron during the absolute refractory period. Do you observe an action potential? a) Yes, you observe an action potential because once a neuron reaches threshold, an action potential can be created even in the absolute refractory period. b) No, an action potential cannot be created because the neuron has not reached threshold. More voltage is needed to stimulate a neuron during the absolute refractory period. c) You see a small graded potential in the neuron, but not an action potential. Check Solve and Submit to solve and submit. Click Solve All Answers to solve all answers.

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During your last visit to the sanctuary, you performed an experiment to determine whether luxons were required for nerve cells to produce octaphorin. In this experiment, you removed a luxon from a single nerve cell and discovered that the production of octaphorin declined rapidly. At the same time, you monitored the production of octaphorin in a nerve cell that retained its connection to a luxon; this cell continued to produce octaphorin at a high rate. From these observations, we concluded that luxons were necessary for female griffs to produce octaphorin. However, I might have been too hasty in reaching this conclusion and need you to help me determine whether luxons are truly required for nerve cells to produce octaphorin. Directions: Use your knowledge of experimental design to answer questions 1–4. 1. You measured the production of octaphorin by one nerve cell detached from a luxon and by another nerve cell attached to a luxon. Given no other measurements, what would be the sample size for quantifying the effect of a luxon on the amount of octaphorin produced by a nerve cell? a) The sample size equals 1 nerve cell, because only one nerve cell was observed in each treatment. b) The sample size equals 2, because two nerve cells were observed between the two treatments. 2. Based on your answer to the previous question, is the sample size likely sufficient to quantify the effect of a luxon on the amount of octaphorin produced by a nerve cell? a) Yes, the sample size is likely sufficient. b) No, the sample size is likely insufficient. 3. Based on only your answers to questions 1 and 2, was it reasonable to conclude that luxons were required for nerve cells to produce octaphorin? a) Yes, it was reasonable to conclude that luxons were required to produce octaphorin. b) No, it was not reasonable to conclude that luxons were required to produce octaphorin. 4. Explain your answer to the previous question. Your explanation should minimally reference why the sample size that you indicated in questions 1–3 was either sufficient or insufficient to quantify the effect of a luxon on the amount of octaphorin produced by a nerve cell.
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QUESTION 20: If you are artificially stimulating a nerve in a science experiment using a voltage source to produce action potentials in a single isolated neuron and monitoring voltage in the neuron's axon, what happens? You stimulate the neuron during the absolute refractory period. Do you observe an action potential? a) Yes, you observe an action potential because once a neuron reaches threshold, an action potential can be created even in the absolute refractory period. b) No, an action potential cannot be created because the neuron has not reached threshold. More voltage is needed to stimulate a neuron during the absolute refractory period. c) You see a small graded potential in the neuron, but not an action potential. Check Solve and Submit to solve and submit. Click Solve All Answers to solve all answers.
TopicAll topics
SubjectBiology
ClassClass 11