Slide 1 4.1 Plasma Membrane Structure and Function Regulates the entrance and exit of molecules into and out of the cell Phospholipid bilayer with embedded proteins –Hydrophilic…
Membrane permeability Membrane permeability Selective permeability - The permeability of the plasma membrane to different substances varies. - Plasma membranes permit some…
What happens in digestion? ❖ Mouth: Chewing (mechanical digestion) Saliva moistens food to make a bolus for swallowing. Salivary amylase begins chemical digestion of starch.…