Using K+ as an example, explain how gradients, collisions between K+ ions, and leak channels result in ion diffusion across a plasma membrane.

answer; hypnagogic sensations)

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many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: