Final answer:
The statement is false as both cell growth and division are regulated by the cell-cycle control system and require specific regulatory signals to proceed, as evidenced by the dysregulated growth seen in cancer and phenomena like algal blooms.
Step-by-step explanation:
The statement that cell growth, unlike cell proliferation, does not depend on the cell-cycle control system is false. While cell growth can occur without division, and cells can increase in size without completing mitosis, the process of a cell growing and dividing is tightly regulated by the cell-cycle control system. This system ensures that cells do not simply divide when they acquire enough materials to form a second cell; they must also receive specific regulatory signals.
Aberrations in cell growth and proliferation are evident in conditions such as cancer where cells may bypass the regular control mechanisms and continue to divide unchecked. This dysregulation can lead to tumors and the spread of cancerous cells throughout the body. It's also apparent in phenomena like algal blooms, where control mechanisms other than nutrient availability play roles in the rapid and abundant division of algal cells. Therefore, both growth and division are complex biological processes that depend on a variety of internal and external factors, including the precise regulation of the cell cycle control system and signaling molecules like growth factors. Misregulation of these processes can have severe implications for an organism's health and survival.