Lecture 22 - Intermolecular forces

Lecture 22 - Intermolecular forces - Midterm Exam 2 Wed,...

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Midterm Exam 2 Wed, Mar 2, 2011 1:10 – 2:00 pm 198 Young (last name begins with “A” - “M”) 176 Everson (last name begins with “N” - “Z”) Exam covers Chapters 10.1 – 10.5, all of 11, and 12.1 – 12.7. Closed Book and Closed Notes No electronic devices except calculator Practice Midterm on course website At least one assigned homework problem will appear on the exam. Review session on Tue Mar 1 at 7:00 pm in 1100 Social Sciences.
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Chapter 10 Summary 1. Enzymes are proteins or RNA that serve as biological catalysts. 2. Enzymes selectively bind substrate in chiral catalytic active site. 3. Enzymes catalyze reactions by decreasing entropic and activation barriers. 4. Enzyme catalysis has optimum temperature and pH. 5. Enzyme kinetics described by Michaelis-Menton equation (K M and V max ). 6. K M and V max measured by Lineweaver-Burk or Eadie-Hofstee Plots. 7. Each enzyme characterized by unique K M and V max . 8. Enzyme activity and purity defined by catalytic turnover number (k cat ). 9. Enzyme catalytic efficiency given by k cat /K M (10 9 M -1 s -1 upper limit). 10. Enzyme kinetics (k 1 , k -1 , k 2 ) used to deduce catalytic mechanism. 11. Three types of enzyme inhibitors (competitive, noncompetitive, uncompetitive). 12. Enzyme inhibitors serve as important drug targets. max max 0 1 ] [ 1 V S V K v M + = E + S E + P ES k 1 k -1 k 2 ] [ ] [ ] [ ] [ max 2 0 S K S V ES k dt P d v M + = = =
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Chapter 11 Summary 1. Wave properties of electromagnetic radiation (c = νλ ). Energy per photon (h ν ) rather than amplitude (i.e. # of photons). 2. Plancks Law explains blackbody radiation (UV catastrophe). 3. Photoelectric effect shows light quantized as photons (E = h ν = hc/ λ ). 4. Small objects (e - etc) have both wave and particle properties (duality). 5. De Broglie wavelength ( λ = h/p = h/mv) only large for small objects. explains discreet energy levels and e - orbits (standing waves). 6. Heisenberg Uncertainty Principle ( Δ x Δ p>±h/4 π or Δ E Δ t> ±h /4 π ). 7. Quantum Mechanical Particle in a Box (E n = n 2 h 2 /8mL 2 Ψ n = Asin(n π x/L)). energy is never zero (zero-point energy) and Δ E 1/L 2 probability depends on position and energy level.
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This note was uploaded on 04/06/2011 for the course CHEM 107B taught by Professor Jamesames during the Winter '09 term at UC Davis.

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Lecture 22 - Intermolecular forces - Midterm Exam 2 Wed,...

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