Answer:
The correct answer would be option C.
Explanation:
A stable condition must be maintained in the cell for its normal functioning. The concentration of nutrients, salts and other substances should be kept within a definite range. Maintaining a stable state inside a cell is said to be homeostasis.
Macromolecules such as proteins, are large molecules to pass through the plasma membrane. Such molecules are transported with a particular mode called vesicle transport. It is active transport as it requires energy.
There are 2 types of vesicle transport endocytosis (transport in the cell) and exocytosis (outside the cell). Both types are helpful in releasing and storing substances as needed.
Thus, the correct answer would be option C.
