what does the term dCs/dx mean in the Ficks equation (can be multiple equation) - solute flux -concentration gradient  -solute concentration  -diffusional coefficent  -change in solute concentration over distance

Water could moves across plasma member through simple diffusion or facilitated diffusion, energy is not required True False

How do two alpha-helices at the constriction point of the Aquaporin 5 transporter protein prevent H3O+ molecules from forming a H+ wire that prevents the transport of H₂O molecules across the membrane? alpha-helices have inverted dipoles that reorient H₂O molecules in the channel to break H₂O/H₂O H-bonds. alpha-helices are amphipathic and can reorient H₂O molecules in the channel to break H₂O/H₂O H-bonds O alpha-helices have inverted dipoles that reorient H3O+ molecules in the channel to form H3O*/ H3O+ H-bonds. O alpha-helices have parallel dipoles that align H₂O molecules in the channel to break H₂O/H2₂O H-bonds. alpha-helices have Lys residues that reorient H₂O molecules in the channel to break H₂O/H₂O H-bonds.

How is the rate of diffusion affected by an increasedconcentration gradient? By increased temperature of asolution? By increased viscosity of the solvent?