please only answer with equations used in this link https://docs.google.com/docu

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please only answer with equations used in this link

https://docs.google.com/document/d/1D0NGc9kA_aM4JzYayb1Sjlt5kIakc507DDmLAOGILPE/edit?usp=sharing

Problem 22.50 The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. When an ion channel opens in a cell wall, monovalent (charge e) ions flow through the channel at a rate of 1.0 x 107 ions/s. Part A What is the current through the channel? I 1.6x10 2 A Submit My Answers Give Up Correct Part B The potential difference across the ion channel is 70 mv. What is the power dissipation in the channel? Express your answer using two significant figures. P 1.1x10 3 w Submit My Answers Give Up Correct

Explanation / Answer

ions flow rate = 1*10^7 inons/sec

current = q*inons flow rate

i = 1.6*10^-19*10^7 = 1.6*10^-12 A

power = p = v*i = 112*10^-15 = 1.12*10^-13 W

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