![34. A neuron is -65 mV. Where in the cell is the charge concentrated? 35. a. What is Eif K] 150 mM, [K 10 mM? b. How does this compare to an average neuron at rest?](http://img.homeworklib.com/questions/9a661e70-a753-11eb-8abc-4b2698dfb72f.png?x-oss-process=image/resize,w_560)
Homework Answers
Answer for 35th question
Na+ is attracted to the inside of neurons at rest by two forces they are ,
1) The high concentration of Na+ outside the cell pushes it into the cell down the concentration gradient.
2) The electrical gradient, due to the negative charge within the neuron, tends to pull the positively charged ion inside in the cell
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34. A neuron is -65 mV. Where in the cell is the charge concentrated? 35. a....
2. (20 pts) A 20 um diameter cell at rest has a potential of -60 mV...
2. (20 pts) A 20 um diameter cell at rest has a potential of -60 mV across its membrane. The cell membrane has a capacitance of 1 uF/cm². Charge of an electron = -1.6 x 10-*°C. a) How many potassium ions in the cell are needed to charge the membrane? i. 320 ii. 1.6 x 10 iii. 4.7 x 10 iv. 9.1 x 1011 b) How much energy is stored in the cell membrane?! i. 1.2 x 10-16 ii. 2.3...
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please write thorough answers thanks PART 1 Answer ONLY ONE of the following TWO questions of...
please write thorough answers thanks
PART 1 Answer ONLY ONE of the following TWO questions of Part 1 ie a) OR b) a) A typical, healthy nerve cell in the body has intracellular and extracellular Na, K and Cl' concentrations as shown below. Na concentration: Extracellular: = 150 mm K concentration: Extracellular: = 4 mm Ci concentration: Extracellular: = 100 mm Temperature = 37°C (303.3K) R (the Universal Gas constant) = 8.315 VCmol'k F (Faraday's constant) = 96,485 Cmol Intracellular:...
A model of a red blood cell portrays the cell as a spherical capacitor, a positively...
A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t. Tiny electrodes introduced into the interior of the cell show a potential difference of 100 mV across the membrane. The membrane's thickness is estimated to be 95 nm and has a dielectric constant of 5.00 (a) If an average red blood cell has a...
A model of a red blood cell portrays the cell as a spherical capacitor, a positively...
A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t. Tiny electrodes introduced into the interior of the cell show a potential difference of 100 mV across the membrane. The membrane's thickness is estimated to be 104 nm and has a dielectric constant of 5.00. (a) If an average red blood cell has a...
Universidad ue Europea Action potential in neurons Dendrites Neurons (nerve cells) are the core components of...
Universidad ue Europea Action potential in neurons Dendrites Neurons (nerve cells) are the core components of the nervous system. They provide critical functions such as control ling muscle activity, sensing thinking, remembering, and regulating glandular secretions. Soma Electrical signals and chemical messengers are used to transmit and receive information between them. The neurons consist of: Nclen Asos The cell body (soma) and its processes Dendrites: the branched projections of a neuron that act to propagate the electrochemical stimulation received from...
2. (20 pts) A 20 um diameter cell at rest has a potential of -60 mV across its membrane. The cell membrane has a capacitance of 1 uF/cm². Charge of an electron = -1.6 x 10-*°C. a) How many potassium ions in the cell are needed to charge the membrane? i. 320 ii. 1.6 x 10 iii. 4.7 x 10 iv. 9.1 x 1011 b) How much energy is stored in the cell membrane?! i. 1.2 x 10-16 ii. 2.3...
An axon is a long, slender projection of a nerve cell, or neuron e , that typically conducts electrical impulses e away from the neuron's cell body e . Capacitance (C) is the ability of a system to store an electric charge. In this activity, you'll use information given about these fascinating structures to calculate the capacitance of an axon. Αxon Axon terminal Dendrite Node of Ranvier Soma Axon Schwann cell Myelin sheath Nucleus plasma membrane cytoplasm, a conducting liquid...
Cell # 1 forms an excitatory synapse onto cell # 2 , when cell #1 fires a single action potential it releases glutamate onto the membrane of cell #2 resulting in a 5 millivolt depolarization, a 5 mV excitatory postsynaptic potential, when cell #1 fires three action potentials in rapid succession this causes a 15 mV depolarization in cell #2 resulting in cell #2 reaching threshold and firing its own action potential. Cell #1 Cell #2 +40 Vm IN Cell...
please write thorough answers thanks
PART 1 Answer ONLY ONE of the following TWO questions of Part 1 ie a) OR b) a) A typical, healthy nerve cell in the body has intracellular and extracellular Na, K and Cl' concentrations as shown below. Na concentration: Extracellular: = 150 mm K concentration: Extracellular: = 4 mm Ci concentration: Extracellular: = 100 mm Temperature = 37°C (303.3K) R (the Universal Gas constant) = 8.315 VCmol'k F (Faraday's constant) = 96,485 Cmol Intracellular:...
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Universidad ue Europea Action potential in neurons Dendrites Neurons (nerve cells) are the core components of the nervous system. They provide critical functions such as control ling muscle activity, sensing thinking, remembering, and regulating glandular secretions. Soma Electrical signals and chemical messengers are used to transmit and receive information between them. The neurons consist of: Nclen Asos The cell body (soma) and its processes Dendrites: the branched projections of a neuron that act to propagate the electrochemical stimulation received from...
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