in Cell envelope, Cell membrane, Cell wall by

1 Answer

0 votes
by
The cell membrane only allows water and certain selected ions and molecules to pass through it, while restricting the entry the some others. Therefore, it is called as semi-permeable or selectively permeable.
Biology Questions and Answers for Grade 10, Grade 11 and Grade 12 students, Junior and Senior High Schools, Junior Colleges, Undergraduate biology programs and Medical Entrance exams.
...