Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Protein–protein interaction wikipedia , lookup
Biosynthesis wikipedia , lookup
Size-exclusion chromatography wikipedia , lookup
Magnesium transporter wikipedia , lookup
Lipid signaling wikipedia , lookup
Proteolysis wikipedia , lookup
Oxidative phosphorylation wikipedia , lookup
Cryobiology wikipedia , lookup
Signal transduction wikipedia , lookup
SNARE (protein) wikipedia , lookup
AP Biology John D. O’Bryant School of Mathematics and Science September 27, 2012 AP Biology Agenda Do Now (Quiz) HW discussion Build-A-Membrane Osmosis Jones Lorenzo’s Oil AP Biology Do Now (Quiz) 1. Who proposed that membranes are a phospholipid bilayer between two layers of hydrophilic proteins? A) H. Davson and J. Danielli B) I. Langmuir C) C. Overton D) S. Singer and G. Nicolson E) E. Gorter and F. Grendel AP Biology Do Now (Quiz) 2. Who proposed that the membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids? A) H. Davson and J. Danielli B) I. Langmuir C) C. Overton D) S. Singer and G. Nicholson E) E. Gorter and F. Grendel AP Biology Do Now (Quiz) 3. Which of the following is one of the ways that the membranes of winter wheat are able to remain fluid when it is extremely cold? A) by increasing the percentage of unsaturated phospholipids in the membrane B) by increasing the percentage of cholesterol molecules in the membrane C) by decreasing the number of hydrophobic proteins in the membrane D) by co-transport of glucose and hydrogen E) by using active transport AP Biology Do Now (Quiz) 4. Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly? A) CO2 B) an amino acid C) glucose D) K+ E) starch AP Biology Do Now (Quiz) Five dialysis bags, constructed from a semi-permeable membrane that is impermeable to sucrose, were filled with various concentrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed) and the percent change in mass of each bag was graphed. AP Biology Do Now (Quiz) 5. Which line represents the bag that contained a solution isotonic to the 0.6 molar solution at the beginning of the experiment? 6. Which line represents the bag with the highest initial concentration of sucrose? 7. Which line or lines represent(s) bags that contain a solution that is hypertonic at the end of 60 minutes? AP Biology Build-A-Membrane AP Biology Lorenzo’s Oil AP Biology