At rest, the interior of a neuron is negatively charged relative to the exterior. The negative charge is due mainly to..?

sodium ions chloride ions potassium ions proteins I was thinking the answer is "2," but I am not positive.


Choose all of the statements that apply to a plasma membrane (aka cell membrane)

Which one's are correct? is a 2-D fluid contains cholesterol and proteins contains a lipid bilayer of phospholipids water cannot diffuse freely across the membrane charged molecules cannot enter or... more


Membrane lipids are capable of many different types of movement. Which of these does NOT occur spontaneously in biological membranes?

switching between lipid layers lateral movement rotation flexing of hydrocarbon


Biomes can shift


plants pollination

How modifications in flower structure make pollination more successful?

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