1. Neurons, by some estimates, spend up to 40% of their energy maintaining a resting membrane potential of about -70 mV. Why is this a worthwhile investment? What would be the impact on our behavior if the
resting membrane potential was shifted either more negative, to about -90 mV, or more positive, to about
-65 mV? (Assume that everything else about the neuron, including threshold, remains unchanged).

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements. which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements. the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center. because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane. the diverse proteins found in and attached to membranes perform many important functions. the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together. membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.