Question

A thing outer boundary with which a cell enclosed​

Answer 1

Explanation:

Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.

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Answer 2

Answer:

cell wall in plant but in animal cell wall is absent only cell membrane is present which is made up.of lipoprotein