For your first experiment you make a membrane of pure myristic acid and measure themelting curve (shown below). Label the position on the plot that indicates the meltingtemperature (Tm). In the space below describe the physical basis for the observedtemperature response of the membrane.Also draw the melting curve for stearicacid membraneMembraneFluidityTemperature

Melting temperature of a membrane (Tm) is the temperature value at which the membrane fluidity is…

Answered: For your first experiment you make a…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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A group of researchers are interested in a question about the osmolarity of the cells of a particular plant species. The team prepared slabs of tissue of this organism and measured the volumes of these tissue slabs. Then, the slabs were submerged in their own solutions of varying sucrose concentrations. After two hours, the slabs were removed from the sucrose solutions, and the percent difference in volume of the slabs was calculated and graphed. The researchers included on the graph a "best fit" line of the data, shown in red here: 15.00 10.00 5.00 0.00 OM sucrose 0.1 M sucrose 0.2 M sucrose 0.3 M suuus 0.4 M sucrose 0.5 M sucrose 0.6 M sucrose -5.00 -10.00 -15.00 -20.00 -Percent Difference ..- Linear (Percent Difference) A positive percent difference indicates an increase in volume of the cells; a negative percent difference indicates a decrease in the volume of the cells. Based on these findings, the osmolarity of the cells of the plant is approximately ?_ M.
The disaccharide α,β-trehalose differs from the α, α structure as shown by having an (α1→ β1) linkage. Draw its structure as a Haworth projection.
SIDE A SIDE B 5 g Glucose 0g Sucrose 100 mL Water jinarnitoij - 0.20M 0g Glucose 5 g Sucrose 100 mL Water Linannitol) 0.20 M Side A Side B How would you describe the level of water (the membrane is permeable to glucose but not permeable to sucrose) in this experiment after 5 days? Multiple Choice water level will be higher on side B water level will stay the same on both sides water level will be higher on side A water level will decrease on both sides
Answer the following questions based on the graph: a) Which of the two molecules that are the same size will passively diffuse across a cell membrane quicker? Why? [2 A] b) Which type of transport method would glucose use? Why? [2 A] Figure 1: Relative Sizes of Molecules Diffusing Across a Cell Membrane Substance Tested water oxygen glycerol glucose alcohol carbon dioxide Graph 50 100 Relative Size of Molecules 150 200
A cell with intracellular osmolarity of 280 mOsm/L is placed into three different containers varying in osmolarity. Which solution from the list would cause the cell to lose water and shrink? 280 mOsm/L 240 mOsm/L 340 mOsm/L NONE of the above
a) 5.5% glucose and 0.9% NaCl have the same osmolarity. What is the osmolarity of these solutions? Please show your work. b) If you soak an animal cell that is permeable to both water and glucose in either 5.5% glucose or 0.9% NaCl (both isosmotic solutions), the cell exposed to 5.5% glucose will gain water, while the cell exposed to 0.9% NaCl will not gain water. Predict why this is the case.
Predict the fate of a red blood cell placed in each of the solutions below. Explain why these changes would take place. (Calculate osmolarity for each solution). Take into account that some will ionize and some will not. 0.3 M Glucose 0.3 M NaCl 0.15 M NaCl
Choose which one Hypotonic, Hypertonic, Isotonic
In an experiment, a 0.001 (mole fraction) solution of polysaccharide in water is made and is placed in the compartment A. Compartment B is filled with pure water. The two compartments are separated by a porous semi-permeable membrane that allows the exchange of water molecules between the two compartments, but not that of the larger polysaccharide molecules. part 1: Show that the chemical potential of water in compartment A is lower than that in compartment B by 2.48 J/mol.
A phospholipid bilayer separates two chambers. The chambers both contain the same volume of water. The left chamber contains 150 mM of an unknown solute A. Solute B is dissolved in the right chamber also at a concentration of 150 mM. Therefore, the initial osmolarity is the same (isotonic) between the two chambers. However, after a short time, the volume increases substantially in the right chamber. What is the most likely ranking of permeability for the molecules to cause this change? (greater permeability means that the molecule moves first across the membrane)
Create a diagram that demonstrates the difference between tonicity and osmolarity. Be sure to label the new solutions in each condition, draw the changes (if predicted) in cell shape/volume, and use arrows to show the movement of water relative to the cell. Please start with a red blood cell in an isosmotic solution and show what happens to cell shape and water movement when NaCl is added to the solution, or when water is added.
The ability of the Goldenrod Gall Moth caterpillar to avoid freezing is due to ____ which passes through a _____ membrane. Question options: Glycerol, permeable Glycerol, semipermeable Glucose, semipermeable Glucose, permeable

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