Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 33.2, Problem 1CC
Summary Introduction
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The diffusion of potassium ions along its concentration gradient leads to an electrical gradient or not. The net diffusion of potassium ion stops due to some reason.
Introduction:
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Chapter 33 Solutions
Principles of Biology
Ch. 33.1 - Which of the following is false? The CNS of...Ch. 33.1 - Prob. 2TYKCh. 33.1 - Prob. 1CCCh. 33.2 - Prob. 1CCCh. 33.2 - Prob. 1BCCh. 33.2 - Prob. 1TYKCh. 33.2 - The resting membrane potential occurs because the...Ch. 33.3 - Are ions the only substances that can move through...Ch. 33.3 - Prob. 1CCCh. 33.3 - Prob. 2CC
Ch. 33.3 - Which is false? Graded potentials may die out or...Ch. 33.3 - Action potentials require a threshold potential...Ch. 33.4 - Prob. 1CCCh. 33.4 - Prob. 1TYKCh. 33.4 - Prob. 2TYKCh. 33.5 - Prob. 1BCCh. 33.5 - Prob. 1TYKCh. 33.5 - Prob. 2TYKCh. 33.6 - Prob. 1CCCh. 33.6 - Prob. 2CCCh. 33.6 - Prob. 3CCCh. 33.6 - Prob. 1TYKCh. 33.6 - Prob. 2TYKCh. 33.7 - Prob. 1TYKCh. 33.7 - Therapeutic drugs that reduce symptoms of...Ch. 33 - Prob. 1TYCh. 33 - Prob. 2TYCh. 33 - Prob. 3TYCh. 33 - Neurons that function mainly in connecting other...Ch. 33 - Prob. 5TYCh. 33 - Prob. 6TYCh. 33 - Prob. 7TYCh. 33 - Prob. 8TYCh. 33 - Prob. 9TYCh. 33 - Prob. 10TYCh. 33 - Describe the differences between graded and action...Ch. 33 - Prob. 2CCQCh. 33 - Prob. 3CCQCh. 33 - Prob. 1CBQCh. 33 - Prob. 2CBQ
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- Describe the contribution of each of the following to establishing and maintaining membrane potential: (a) the Na+K+ pump, (b) passive movement of K+ across the membrane, (c) passive movement of Na+ across the membrane, and (d) the large intracellular anions.arrow_forwardWithout saturation of transport proteins and under the same concentration gradient how can the speed of simple diffusion be compared to the speed of facilitated diffusion?arrow_forwardWhat is the difference between simple and facilitated diffusion? Facilitated by which type of molecule does the term “facilitated” mean?arrow_forward
- What might determine the value for the maximal flux of a mediated transportsystem?arrow_forwardTwo 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?arrow_forwardWhat is the application of electrical application in Cell Membrane potential gradient?arrow_forward
- Usually , rates of diffusion vary inversely with molecular weights; so smaller molecules diffuse faster than do larger ones. In cells, however, calcium ion diffuses more slowly than does cAMP. Propose a possible explanation.arrow_forwardSimilarly, what will be the effect on membrane potential if Cl- ions move into a cell?arrow_forwardFor most neurons, the extracellular concentration of chloride ions (Cl-) is 108 mM, whilethe intracellular concentration of Cl- is 5 mM.If the plasma membrane becomes more permeable to Cl-, would there be Clinflux or Cl- efflux at an RMP of -70 mV? Why?arrow_forward
- According to Fick’s law of diffusion, which factors determine rate of diffusion?arrow_forwardThe experiment described in Figure 11-16 was performed at 37 °C. If the experiment were carried out at 10 °C, what effect would you expect on the rate of diffusion? Why?arrow_forwardAn increase in which of the following would decrease rate of diffusion(flux)? (there can be multiple answers) -temperature -membrane thickness -concentration gradient -membrane permeability -membrane area -molecular sizearrow_forward
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