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Acell has a membrane potential of -100 mv (more negative inside than outside) and has 1,000 times more calcium ions outside the cell than inside. which best describes a mechanism by which ca2+ enters this cell? a. facilitated diffusion of ca2+ into the cell down its electrochemical gradientb. movement of ca2+ into the cell through an ion channel down its concentration gradientc. passive diffusion of ca2+ into the cell down its electrochemical gradientd. cotransport of ca2+ into the cell with cl-e. movement of ca2+ into the cell through a carrier protein down its electrical gradient
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Acell has a membrane potential of -100 mv (more negative inside than outside) and has 1,000 times mo...
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