I think the answer is A) policeman
because one of the cell walls functions is to protect the cell and control what enters and what leaves
Answer: Hydrocarbons enter the cell by dissolving in the lipid bilayer of the membrane.
Explanation:
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The lungs contain the bronchi, bronchioles, and alveoli.
The circulatory and respiratory systems work together to maintain homeostasis.
