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.
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.
What distinguishes the four complexes of the mitochondrial electron transfer system?
Explain how the CO2 generated by cells and exhaled in the lungs is carried as bicarbonate in the blood.
A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the above
As CO2 concentrations increase in the atmosphere, biologists continue to explore the role of respiration from plants as a small but potentially important contribution beyond fossil fuel combustion. The data in the Table were collected from the leaf of a sagebrush plant from a semiarid ecosystem in Wyoming, enclosed in a chamber that measures the rate of CO2 exchange. The respiration rate is the amount of CO2 in micromoles lost by the leaf per square meter per second, which results in the negative numbers. The temperature values are from the leaves as they are heated or cooled during the measurements. Observation Temperature (C) Respiration Rate (mol/m2/s) 1 25 -2.0 2 30 -2.7 3 35 -4.1 4 40 -5.8 5 20 -1.3 6 15 -1.0 7 10 -0.7 Cengage Learning 2017 What describes the relationship between temperature and respiration, a line or a curve? Does the Q10 that you calculated in 2 suggest a line or a curve? Source: Data based on unpublished research by Brent Ewers, University of Wyoming.

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