C. A wall of stones and mortar
This would act as a model describing the cell membrane.
Explanation;
A cell membrane is made up of a phospholipid bilayer with embedded proteins.
A cell membrane hold the different components of the cell together and to protect it from the environment outside the cell. It acts as a boundary between the inside environment and the outside environment of a cell.
It regulates the materials that enters and exits the cell; through selective movement of substances in and out of the cell.
Scientists classify rocks based on texture, composition, and how the rocks formed.] Rocks are classified by how they formed.
Answer: The answer is A.
Explanation: it reflects and accurate out come of the chemical reaction.
Answer:
Microscope i believe.. let me know if its correct :)
Explanation: