Lab #5mol 215

# Lab #5mol 215 - remained on When pin 1 was replaced and pin...

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Lab Report #5 1. Resistors (ohms) Voltages (volts) Plotted R Rf Vin Vout Calculated Vout/Vin (Rf+R)/R 220.00 220.00 1.8 6 3.60 3.72 1.935484 2 220.00 11000.0 0 1.8 6 14.64 94.86 51 51 220.00 22000.0 0 1.8 6 14.65 187.86 101 101 22000.0 0 220.00 1.8 6 1.86 1.88 1 1.01 22000.0 0 10000.0 0 1.8 6 2.68 2.71 1.44086 1.454545 22000.0 0 22000.0 0 1.8 6 3.60 3.72 1.935484 2 10000.0 0 220.00 1.8 6 1.86 1.90 1 1.022 11000.0 0 11000.0 0 1.8 6 3.60 3.72 1.935484 2 Gain (Vout/Vin) vs Resistance Ratio (Rf+R)/R y = 1.0005x - 0.0392 0 20 40 60 80 100 120 0 20 40 60 80 100 120 Resistance Ratio Gain

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As expected, the Vout/Vin of a non-inverting amplifier with negative feedback is equal to the Resitance ratio (Rf+R)/R. The calculated values for 2 of the R=220 combinations were used instead of the observed because the observed was limited by the circuit to less than 15 volts. 2. a. When both inverting inputs are connected, there is an arbitrary fight for current. Which ever circuit originally has the current will win this fight for current and the light will be illuminated. For example, when both inputs were connected, the green light was on to start. When Pin 1 was disconnected, the green light
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Unformatted text preview: remained on. When pin 1 was replaced and pin 7 disconnected, the red light became bright and the green shut off. Then when both pins were replaced, the red light remained on. This process can be repeated. Disconnect 1, green on, red off. Replace 1, green remains on. Disconnect 7, red on, green off. Replace 1, red remains on. 3. During heat shock, changes in lipid-protein interactions in the membrane alter the proteins that maintain membrane organization. This increases the fluidity of the plasmid membrane. With greater fluidity, the membrane is able to adopt new configurations, making it easier to bind receptors and allow more transport (both active and passive) across the membrane. Thus, during heat shock, the membrane of bacteria becomes more fluid and is able to form more conformations that allow it to take up DNA....
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## This note was uploaded on 09/20/2008 for the course MOL 215 taught by Professor Edwardc.cox,philipg.felton during the Fall '06 term at Princeton.

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Lab #5mol 215 - remained on When pin 1 was replaced and pin...

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