Author: Anonymous

THIS IS AN OPTIONAL BONUS QUESTION WORTH UP TO 3 EXTRA-CREDIT POINTS! Study the diagram below carefully and then read the additional information below it.  Imagine that the neuron you see above was dissected from a sea slug (Aplysia californica) and placed in a petri dish.  This neuron was then submerged in a bath that exactly replicates the normal extracellular fluid for this species, which is coincidentally exactly the same as in humans.  This neuron was then ever-so-gently impaled with two recording electrodes (orange and green triangles) placed into the axon hillock and axon terminal, respectively.  Those recording electrodes are connected to voltmeters and separate computer monitors showing that the neuron is healthy and chillin’ at its normal resting membrane potential.  There is also a stimulating electrode (blue triangle) implanted into one of the neurofibril nodes and connected to a stimulator device that is set to deliver +15 mV of current each time its ridiculously big red button is pushed. Using the text box below, answer the following questions in complete sentences and using proper grammar and capitalization: 1. Imagine that you push that big red stimulating button at exactly Time 0 on the recording screens and deliver +15 mV into the neuron at that exact site.  Will an action potential occur at that site?  Explain why or why not in as much detail as you can muster. 2. What would you expect to observe over the next 50 milliseconds on the green computer screen?  Explain your reasoning in as much detail as you can muster. 3.  What would you expect to observe over the next 50 milliseconds on the orange computer screen?  Explain your reasoning in as much detail as you can muster.

Use the Gauss-Jordan method to solve the system of equations.x – y + z = -2x + y + z = -6x + y – z = 4

Use the pull-down menus to select the best terms that make these sentences correct: Imagine a chemically-gated channel located on a neuron’s dendrites. If that channel binds an inhibitory neurotransmitter, it will allow [blank1] ions to influx OR [blank2] ions to efflux.  The resulting change in the target neuron’s membrane potential would be BEST described as a(n) [blank3].

In grouping scores, the wider the intervals, the more information that is lost.

The method of authority is opposed to the scientific method.

If alpha is made more stringent, beta increases.

If an event is certain to occur, its probability of occurrence equals 1.00.

Write the point-slope form of the line satisfying the conditions. Then use the point-slope form of the equation to write the slope-intercept form of the equation in function notation.Passing through (-2, -24) and (5, 25)

If a stranger gives you a coin and you toss it 1,000,000 times and it lands on heads 600,000 times, what is p(Heads) for that coin?

The advantage of a powerful experiment is that ____.