PATHOLOGY

Detailed explanation-1: -So, the correct answer is ‘Phosphate heads are oriented towards the exterior of the cell or toward the cytoplasm’.

Detailed explanation-2: -This means that they have a hydrophilic, polar phosphate head and two hydrophobic fatty acid tails. These components of the phospholipids cause them to orientate themselves, so the phosphate head can interact with water and the fatty acid tails can’t, hence forming a bilayer.

Detailed explanation-3: -The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side.

Detailed explanation-4: -Since the tails are hydrophobic, they face the inside, away from the water and meet in the inner region of the membrane. Since the heads are hydrophilic, they face outward and are attracted to the intracellular and extracellular fluid.