4. (15 points) Consider a spherical organism of radius ro withinwhich respiration occurs at a uniform volumetric rate of That is,oxygen (species A) consumption is governed by a first- orderreaction, homogeneous chemical reaction.a. If a molar concentration of CA(ro) = CA,o is maintained atthe surface of the organism, obtain an expression for theradial distribution of oxygen, CA(r), within the organism.Hint: To simplify solution of the species diffusion equation,invoke the transformation y = rCA.b. Obtain an expression for the rate of oxygen consumptionwithin the organism.c. Consider an organism of radius ro = 0.10 mm and adiffusion coefficient of DAB = 108 m2/s. If CA, o = 5 x105kmol/m3 and k1 20 s1, estimate the corresponding valueof the molar concentration at the center of the organism.What is the rate of oxygen consumption by the organism?

Answered: Image /qna-images/answer/cf648d66-bb2e-430a-bd21-0d0b23ff8236.jpg

Answered: 4. (15 points) Consider a spherical…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter11: The Blood

Section: Chapter Questions

Problem 1SQE

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Using the Nernst equation, calculate the equilibrium potential for Ca2 and for C1 from the following sets of data: a. Given [ Ca2+ ]0=1mM,[ Ca2+ ]i=100nM, find Eca2+ b. Given [ Cl- ]0=110mM,[ Cl- ]i=100mM, find Ecl
13. There are several ways to measure cellular respiration experimentally. For example, CO2 and O2 gas sensors measure changes over time in the concentration of carbon dioxide or oxygen, respectively. Design two experiments to test the effects of changing two different variables or conditions (one per experiment) on the respiration of research organism of your choice.
2. (20 points) Consider combustion of hydrogen gas in a mixture of hydrogen and oxygen adjacent to the metal wall of a combustion chamber. Combustion occurs at constant temperature and pressure according to the chemical reaction 2H₂+ O₂→ 2H₂O. Measurements under steady-state conditions at 10 mm from the wall indicate that the molar concentrations of hydrogen, oxygen, and water vapor are 0.10, 0.10, and 0.20 kmol/m³, respectively. The generation rate of water vapor is 0.96x102 kmol/m³s throughout the region of interest. The binary diffusion coefficient for each of the species (H, O̟, and H₂O) in the remaining species is 0.6 X 10-5 m²/s. (a) Determine an expression for and make a qualitative plot of C as a function of distance from the wall. H2 (b) Determine the value of C2 at the wall. H2 (c) On the same coordinates used in part (a), sketch curves for the concentrations of oxygen and water vapor. This will require you to calculate Co, and C. 02 H20 (d) What is the molar flux of water…
Determine the concentrations (in mole fraction) of all species in the exhaust from the incomplete combustion (90% combustion) of butane (C4H10). Assume 50% excess air with respect to complete combustion is the source for the oxygen. Air composition is 79 mol% N2 and 21 mol% O2.
Describe three ways in which carbon dioxide can be transported.
What is the difference between respiration and aerobic cellular respiration?
Understanding the Mechanism of Hemolytic Anemia Genetic defects in glycolytic enzymes can have serious consequences for humans For example, defects in the gene for pyruvate kinase can result in a condition known as hemolytic anemia. Consult a reference to learn about hemolytic anemia, and discuss why such genetic defects lead to this condition.
Energetics of the Hexokinase Reaction The standard-state free energy change. Gfor the hexokinase reaction, is â€” 1 6.7 kJ/mol. Use the values in Table I to calculate the value of Gfor this reaction in the erythrocyte at 37Â°C.
Characterizing Glycolysis List the reactions of glycolysis that a. are energy consuming (under standard-stale conditions), b. are energy yielding (under standard-state conditions), c. consume ATP. d. yield ATP e. are strongly influenced by changes in concentration of substrate and product because of their molecularity. f. are at or near equilibrium in the erythrocyte (see Table 18.2).
When you open a bottle of sparkling water, the carbon dioxide gas in the bottle form bubbles. If the bottle is left open, the water will eventually go flat. Explain these phenomena in terms of atmospheric pressure.
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Explain how the CO2 generated by cells and exhaled in the lungs is carried as bicarbonate in the blood.

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