Question

Plasma membrane is semi permeable . why?

Answer 1

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Explanation:

Plasma membrane is semi permeable because it allows selective substance to enter through it which is useful for cell

Answer 2

Answer:

The membrane is selectively permeable because substances do not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot.