Quantitative Cell Biology
Problem Set #1
1) Suppose you are studying a protein that is embedded in the plasma membrane of a cell. After labeling the molecule with a fluorescent tag it become clear that it is moving. To analyze this you plot the average di
BME 221 Fall 2009 - Quiz 2 (4 pts total) 1. Based only on osmotic pressure considerations, can a tree grow taller or shorter in warmer climates compared to cooler climates? Explain. Since trees achieve transport up the trunk to high branches by utilizing
10/5/09 Quiz 1 Solutions (out of 7 points) 1. a) Write in words the first law of thermodynamics. (1 pt) The internal energy of an isolated system is constant. OR Energy can neither be created nor destroyed. b) For what system (open, closed, isolated) is i
Problem 8.3 Determine (a) the average and (b) rms values of the periodic current waveform shown in Fig. P8.3.
i (A) 4 3 2 1 t (s) 0 1 2 3 4 5 6 7 8
Figure P8.3: Waveform for Problem 8.3.
Solution: (a) i(t ) = 2 A, for 0 t 2 s 4 A, for 2 t 4 s
T = 4 s. Iav
Problem 7.2 Express the current waveform i(t ) = 0.2 cos(6 109t + 60 ) mA in standard cosine form and then determine the following: (a) Its amplitude, frequency, and phase angle. (b) i(t ) at t = 0.1 ns. Solution: i(t ) = 0.2 cos(6 109t + 60 ) = 0.2 cos(6
BME 221, Final Exam, Fall 2009
1. Explain why it is possible to separate different proteins in an aqueous solution
from each other by salting-out the proteins (15P).
2. Imagine you had the following metals and metal salts available to you: zinc wire
and Z
BME 499 Biophysical Chemistry Final Exam, Dec. 17, 2004
Name:_
1) Assume you are swimming in a polluted lake and the toxic molecule in that lake cannot enter your body through the skin. While you swim, however, you are remembering your Biophysical Chemist
Physical therapists often engage patients in muscle strengthening as part of rehabilitation. One exercise a physical therapist has asked his patient to do is shown in a simple diagram below. The patients physical disability is mainly on the left side, in
Quantitative Cell Biology Alan Hunt 2131 Gerstacker [email protected] Text: Molecular Cell Biology (6th edition) by Lodish et al. W.H. Freeman and Company printing. Note: 4th addition is available on line, and is acceptable. To access go to http:/www.ncbi.
BME 418, Quantitative Cell Biology
Alan J. Hunt
Introduction to cell structure, bacteria The primary goal of this course is to introduce general principals of cellular structure and functioning. This course will diverge from traditional cell biology class
Assignments for Anthony Bedford & Wallace T. Fowler Engineering Mechanics: Statics, Fifth Edition
The topics covered in a course on dynamics vary according to the judgments of instructors and the objectives of particular departments. Here we provide two c
BME 221 12/11/09 Quiz 6 1. What is the rate law for a reaction with only the following single elementary step: A+B P, if the rate constant is equal to k1? Because this is an elementary step, we know the mechanism involves A and B, so: Rate = k1[A][B] This
12/4/09 Quiz 5 (7 pts) 1. What is the precise, general mathematical definition of pH? (1 pt) pH = -log aH+ 2. What is the pH of a 1 mM NaOH solution? (2 pts) [OH-] = 0.001M [H+] = 10-14 / [OH-] = 10-11 M pH = -log [10-11] = 11 3. What is the pH (to one de
11/23/09 Quiz 4 (9 pts) 1. What would happen if you put two wires of different metals into a solution of electrolyte? a) If you used a voltmeter, would you measure a potential (yes/no)? (1 pt) yes b) Why? (2 pts) Each metal has a specific standard reducti
11/18/09 Quiz 3 (7 pts) 1. a) Formulate LeChatliers principle. (1 pt) b) Name 3 variables you can make predictions about based on LeChatliers principle. (1 pt each) 2. Why is G so negative for ATP hydrolysis? Give at least 2 reasons. (2 pts) 3. How does b
10/5/09 Quiz 1 Solutions (out of 7 points) 1. a) Write in words the first law of thermodynamics. (1 pt) The internal energy of an isolated system is constant. OR Energy can neither be created nor destroyed. b) For what system (open, closed, isolated) is i
1) a) 70% concentrated nitric acid solution by weight Density of solution = 1.42 g cm-1 Molality = Molarity = b) 0.25 mol kg -1 sucrose solution Density = 1.2 g cm-3 Percent by weight = 2) a) Assumption: ideal behavior Temperature = 20 C = 293.15 K PH2O
Problem 7.59 The input signal in the op-amp circuit of Fig. P7.59 is given by vin (t ) = 0.5 cos 2000t V. Obtain an expression for vout (t ) and then evaluate it for R1 = 2 k, R2 = 10 k, and C = 0.1 F.
R2 C R1 in(t) _ + I2 IC I1 I1 R1 In = 0 Vn = Vp = 0 V
Additional Practice Problems for Midterm 2
IOE 265, Fall 2010
1. The lifetime of 2 light bulbs for a particular lamp are independent random variables. Let X=lifetime of first bulb and Y=lifetime of the second bulb (both in 1000s of hours). Suppose X and Y
Final Exam Review Notes
Chapter 2 -Sample space -Permutations and combinations -Conditional Probability (vs independence) -BAYES THEOREM -If A and B are independent, P(A | B) = P(A) Chapter 3 -Discrete random variables p(x) = P(X=x) -Bernoulli r.v.s based
Problem 9.3 For the circuit shown in Fig. P9.3, determine (a) the transfer function H = Vo /Vi , and (b) the frequency o at which H is purely real.
C V1 L1 L2
+
Vi
+
R Vo
_
_
Figure P9.3: Circuit for Problem 9.3.
Solution: (a) KCL at node V1 gives: V1 V1
Sections 9-4 and 9-5: Passive Filters
Problem 9.20 The element values of a series RLC bandpass lter are R = 5 , L = 20 mH, and C = 0.5 F. (a) Determine 0 , Q, B, c1 , and c2 . (b) Is it possible to double the magnitude of Q by changing the values of L and
Problem 9.4 For the circuit shown in Fig. P9.4, determine (a) the transfer function H = Vo /Vi , and (b) the frequency o at which H is purely real.
R1
+
L C R2 Vo
Vi
Solution: (a) KCL at mode V0 : Vo Vi + Vo R1 Solution leads to H= jR2 L Vo = . 2 LC) + j
Problem 9.37 Design an active highpass lter with a gain of 10, a corner frequency of 2 kHz, and a gain roll-off rate of 40 dB/decade. Solution: To secure a roll-off rate of 40 dB/decade we need to use two stages of the circuit in Fig. 9-24.
Rf1 Rs Vs + Cs