why is it important that a cell membrane contains opening into the cell a the opening allows chemical such as oxygen and other nutrients into the cell b the opening will allow the cell to grow larger see the openings are only used for carbon dioxide to leave the inside of the cell the opening in the cell membrane allows DNA to come in and out of the cell ​

Explanation:

Cells generate energy from the controlled breakdown of food molecules. ... View Terms of Use  molecules that other cells rely on for the energy required to sustain growth, metabolism, ... proteins that span the cell membrane permit specific molecules into the cell, Figure 2: Cells can incorporate nutrients by phagocytosis.

a- all cells come from pre-existing cells

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.