How are the tails and heads of membrane phospholipids oriented in their environment?
A. The hydrophobic tails are oriented toward each other and the hydrophilic heads are oriented towards the extracellular fluid and the intracellular fluid.
B. The hydrophilic tails are oriented toward each other and the hydrophobic heads are oriented towards the extracellular fluid and the intracellular fluid.
C. The hydrophilic heads are oriented toward each other and the hydrophobic tails are oriented towards the extracellular fluid and the intracellular fluid.
D. The hydrophobic heads are oriented toward each other and the hydrophilic tails are oriented towards the extracellular fluid and the intracellular fluid.
Answer: A
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