Which statement regarding the diversity of ion channels is false?Select one:Select the correct definitionWith only six different types, potassium channels are the least diverse channel type.There are at least 10 different sodium channels in humans.Sodium channels that do not inactivate have been found.There are least 10 different types of calcium channels.Calcium channels serve diverse functions such as influencing action potential shape and mediating the release of neurotransmitters.

The cell membrane of a neuron has both gated and non-gated ion channels. Which type of non-gated channel is more abundant?Multiple ChoiceNon-gated sodium channelsNon-gated potassium channels

Which statement about voltage-gated ion channels is true?Select one:Select the correct definitionWithout sodium channels, no current flows outWithout potassium channels, no current flows inNa+ channels open after a short delayK+ channels close after a short delayNa+ and K+ channels can work independently of one another

Which of the following is false regarding Na+ ion channels in a neuron?Group of answer choicesTheir concentrations are highest at the nodes of Ranvier.Na+ can move from an area of high concentration inside a cell to an area of low concentration outside the cell through these channels.They permit the movement of Na+ ions in only one direction.The Na+ ion channels are integral membrane proteins.

At resting membrane potential, voltage-gated potassium ion channels are open.4-25-2013Group startsTrue or FalseTrue, unselectedFalse, unselected

The plasma membrane of an excitable cell is more permeable to potassium ions becauseMultiple Choiceprotein molecules cannot exit through the cell membrane.calcium ions block Na+ and Cl- channels.of its positive electrical charge.there are more leak channels for K+ than Na+.there are more gated channels for K+.