Question

most transmembrane proteins have ____ regions facing the intra - and extracellular fluid, and ____ regions embedded in the phospholipid bilayer. multiple choice hydrophilic, hydrophilic hydrophilic, hydrophobic hydrophobic, hydrophobic hydrophobic, hydrophilic lipophilic, lipophobic

Explanation:

Intra - and extracellular fluids are aqueous. Hydrophilic regions interact well with water, so they face these fluids. The interior of the phospholipid bilayer is non - polar, so hydrophobic regions of transmembrane proteins are embedded in it.

Answer:

B. hydrophilic, hydrophobic