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Which figure shows example of gap junctions?  Which figure show indirect communication?  Which is an example of direct communication? Where are chemical messengers released in indirect communication?  Where are chemical messengers released in direct communication?

What type of chemical messengers elicit a long response time?  Why?

A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true? All potentials are measured relative to infinity.

Choose the answer that best describes the following filter:   

   Figure shows an active first-order low-pass filter. R = 200 ohm, RA = RB= 10k ohm.  Calculate the pass band gain, K. 

An active filter cannot have a maximum gain of 1.

Which finding, if present, is consistent with a diagnosis of unstable angina?

Calculate the Minimum Gain Vout/Vin of the following circuit. Round your answer to the nearest 0.01.   

In the peak hold/detector circuit, time constant is a tunable property that is equal to the amount of time it takes for the output to decay by a factor of _____________ times the peak value.

Select all that apply. The peak hold circuit’s time constant …