Question 32 Which of the following relationship is TRUE about carrageenans? O a. higher degree of sulfation, higher solubility in water O b.lower degree of sulfation, higher solubility in water O c.higher degree of sulfation, higher gel formation O d. lower degree of sulfation, lower gel formation
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- Heating collagen, a water-insoluble fi brous protein, forms the jelly-like substance called gelatin. Explain how this process may occur.8. For a given cell, the concentration of sucrose is 8mM inside the cell and 0.5mM outside the cell. The concentration of Na* is 0.5mM inside the cell and 10mM outside the cell. The membrane potential for this cell is -120mV and the temperature of the system is 25°C. A. What is AG for the inward transport of sucrose in this system?Question 4 Which of the following contain statements that are both correct? Increase in CAMP and IP3 levels promotes increase in intracellular Ca*2 ions. Phytochemicals that elicit sweet sensation are considered natural sweeteners. O Each taste buds contain only one taste receptor cell type, which results to a predominant taste modality on specific tongue locations. In a 250g carbohydrate meal, a total of 1 kcal of energy is produced. O Ligand binding to G-protein coupled receptors (GPCR) promotes the activation of heterotrimeric G-proteins. G-proteins are activated through direct phophorylation of GDP that bound to the a-subunit. O Aspartame triggers the cellular signaling cascade via activation of CAMP as secondary messenger. Primary role of non-nutritive sweeteners is to provide energy for the body.
- THIS IS A 3Part QUESTION, PLEASE ANSWER ALL You are studying how a bacteria grows in various buffers, and also the impact osmo-pressure has on its survival A. The bacteria has [solute] conc. 150 nM. Out of the first 3 buffers (1-3), which one is hypertonic, isotonic and hypotonic environments. Explain reasoning. B. You attempt to grow the bacteria in coffee but there isnt bacteria growth and it actually lyses. Is coffe environment hypertonic, isotonic, or hypotonic, explain reasoning. And what [coffee] conc. causes it to lyse. C. You use a different bacteria and grow it in Buffer 3, and it is isotonic. What about the other buffers, will it be isotonic, hypertonic, or hypotonicans fast I will upvote A sample of PbSO4 solid has reached equilibrium in a beaker of water. If the ionic strength of the solution is then increased by adding LINO3 salt what happens to the activity coefficients of the Pb+2 and what happens to the solubility of the PbSO4 choose the option and explain the activity coefficient will increase and the molar solubility will decrease Both activity coefficient the molar solubility will decrease the activity coefficient will decrease and the molar solubility will increase Both activity coefficient the molar solubility will increaseyeasts are able to produce high internal concentrations of glycerol to counteract the osmotic pressure of the surrounding media. suppose that a sample of yeast cells were placed in a 4% sodium chloride solution by weight. The density of solution is at 25 C = 1.02 g/ml, Molecular weight of solute = 58.44 g/mol, i of glycerol = 1 and R=0.08205 L-atm/mol-K What is the weight of solute in grams What is the moles of solute What is the volume of the solution in liters What is the molarity of the solution What is the value of the temperature to be used to solved for the osmotic pressure of the solution What is the osmotic pressure of solution
- 3 cell membrane samples: A, B, and C were fluorescently labeled and subsequently photobleached. The recovery of fluorescence is given on the FRAP curve: (see image attached) Rank the 3 cell membranes in terms of DECREASING fluidity and explain your ranking based on their FRAP curves, most probable appearance, and composition of the membranes. Draw the expected image of the surface of the 3 membranes BEFORE photobleaching and AFTER fluorescence recovery as viewed under a fluorescence microscope.Question 2 Briefly explain how the antioxidant activities of tocochromanol natural products can be correlated to their chemical structures. Illustrate your answer with suitable chemical structures and reaction mechanisms. HO "Dandidad tocotrienolWe’re back at it, more fun phytocannabinoids! We want to add Cannabidiol (CBD) to 15 mL of HL-60 cells so that you have a concentration of 12 hM. Our stock solution is 8 µM. What is the volume of stock solution we need?
- Liver cells proliferate excessively both in patients with chronic alcoholism and in patients with liver cancer. Is alcohol an anti-apoptopic compound? 2. Through diagrams with labeling and description, describe how signals such as taste and light are transmitted.why carrots are sensitive to pH change, neutral or slightly basic condition allows faster degradation of molecule while in acidic environment degradation does not takes place and carotenoid pigments are preserved?A plant cell with a ΨS of -0.65 MPa maintains a constantvolume when bathed in a solution that has a ΨS of -0.30 MPaand is in an open container. The cell has a(A) ΨP of +0.65 MPa.(B) Ψ of -0.65 MPa.(C) ΨP of +0.35 MPa.(D) ΨP of 0 MPa