Question : Which thin, flexible barrier separates the internal of the cell from the extracellular fluid?
Option 1: Cytoplasmic membrane
Option 2: Restriction barrier
Option 3: Nuclear envelope
Option 4: Plasma membrane
Correct Answer: Plasma membrane
Solution : The correct answer is the Plasma membrane .
The plasma membrane, also known as the cell membrane, is a thin, flexible barrier that controls what can enter and exit the cell and divides the inside of the cell from the external world.