Question

question 12 which of the following is the most accurate statement comparing cell membranes and cell walls? a cell membranes function mostly as selectively permeable gatekeepers, while cell walls function mainly as support systems b cell walls prevent everything from entering the cell, while cell membranes allow some things to enter. c cell walls function mostly for photosynthesis while cell membranes function mostly for cellular respiration. d cell membranes are found only in animal cells; cell walls are found only in plant cells.

Explanation:

Cell membranes are selectively - permeable, controlling the movement of substances in and out of the cell. Cell walls, mainly found in plant cells, provide structural support and protection. Option b is incorrect as cell walls are not completely impermeable. Option c is wrong because cell walls are not involved in photosynthesis and cell membranes are not mainly for cellular respiration. Option d is incorrect as cell membranes are in both animal and plant cells, and cell walls are also in some bacteria, fungi etc.

Answer:

A. Cell membranes function mostly as selectively permeable gatekeepers, while cell walls function mainly as support systems