Which statements are consistent with the fluid-mosaic model of membranes?
(a) All membrane proteins are bound to the interior of the membrane.
(b) Both proteins and lipids undergo transverse (flip-flop) diffusion from the inside to the outside of the membrane.
(c) Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane.
(d) Carbohydrates are covalently bonded to the outside of the membrane.
(e) The term mosaic refers to the arrangement of the lipids alone.