Thinking back to the "effect of concentration" lab, what did your data indicate? The concentration gradient does not have an effect on the rate of diffusion. An increase in the concentration gradient will cause the rate of diffusion to decrease. An increase in the concentration gradient will cause the rate of diffusion to increase .

Thinking back to the "effect of concentration" lab, what did your data indicate? The concentration gradient does not have an effect on the rate of diffusion. An increase in the concentration gradient will cause the rate of diffusion to decrease. An increase in the concentration gradient will cause the rate of diffusion to increase .

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

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 5UC

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Two students are discussing the effect of concentration gradient on diffusion. Student A says, “The higher the concentration gradient, the slower the rate of diffusion.“ But student B thinks the opposite. Who is correct?
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Which of the following is inversely related to the rate of diffusion for certain substance: a- Diffusion coefficient b- Area available for diffusion C- Width of cell membrane d- Different in concentration for the substance
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A student designed an experiment to test whether different concentration gradients affect the rate of diffusion through dialysis tubing. Four different solutions (0% NaCl, 1% NaCl, 5% NaCl, and 10% NaCl) were tested under identical conditions. Twenty mL of each solution was placed into separate dialysis tubing that is permeable to Na+, Cl-, and water. Each bag was placed in a separate beaker and covered with distilled water. The concentration of NaCl in the water outside of each bag was measured at 40-second intervals. The graph below shows the results from the 5% bag: Concentration of NaCl Outside of Dialysis Bags Concentration of NaCl (mg/L) 400 320 240 160 80 0 40 80 Time(seconds) 120 5% Solution 160 a. Describe the process of diffusion through the dialysis tubing. b. If you were to design a different experiment testing rates of diffusion, identify experimental procedures. c. Analyze that data in the graph and describe the results. Provide reasoning to justify your answer. d.…
Which of the following statements about diffusion is correct? It is an active process in which molecules move from a region of lower concentration to one of higher concentration. It is very rapid over long distances. It requires an expenditure of energy by the cell. It is a passive process in which molecules move from a region of lower concentration to a region of higher concentration. It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
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