Question

multiple - choice question
what does the cell membrane do?
take in food and remove waste
lets specific molecules in and out of the membrane
all the above
communicates with other cells, gathers information about the environment, and repairs itself

Explanation:

The cell membrane is a selectively permeable barrier. It controls the movement of substances (specific molecules) in and out of the cell. Taking in food (nutrients) and removing waste are part of the transport function (which is about specific molecules moving in and out). Communicating with other cells, gathering environmental information, and self - repair are not the primary and most fundamental functions directly related to the core role of letting specific molecules pass. The option "lets specific molecules in and out of the membrane" is the most accurate description of the basic and well - known function of the cell membrane.

Answer:

lets specific molecules in and out of the membrane