In the region of the dendrites and cell body of a typical interneuron, the plasmalemma contains ligand-gated ion channels which are activated by nitrogen electric fields voltage changes eurotransmitters SUBMIT
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Step 1: Ligand-gated ion channels are activated by the binding of a specific ligand to the channel. Show more…
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3. An unknown organism has been discovered. It contains cells with excitable membranes that scientists suspect are used for rapid information transfer. The membrane of the cell at rest is permeable only to anion X-. Active transport pumps in the membrane move X- into the cell while simultaneously moving equal numbers of Y- out of the cell. When neurotransmitter Z is released into the extracellular fluid in contact with a portion of the cell membrane, ligand-gated channels open that allow twice as many X- ions as Y- ions through the membrane. Which one of the following is incorrect? Select one: a. An IPSP will occur. b. Y- will diffuse into the cell. c. X- will diffuse out of the cell. d. The membrane will depolarize. e. The channels are chemically gated. 5. Neurons store neurotransmitter molecules in vesicles located within _____. Select one: a. synaptic terminals b. the cell body c. the synaptic cleft d. myelin e. dendrites 7. Neurotransmitters categorized as inhibitory would not be expected to: Select one: a. bind to receptors. b. open K+ channels. c. open Na+ channels. d. open Cl- channels. e. hyperpolarize the membrane.
Suman K.
Where would you expect to find graded potentials being created using ligand-gated receptors? Dendrite Cell body Axon hillock Axon Axon terminal
Sri K.
Which of the following membrane regions would have significant numbers of voltage-gated ion channels?
Adi S.
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