Question

While discussing the various types of cells, the instructor points out that cells that renew constantly throughout life also have specialized cells that are unable to divide without:

a) Oxygen
b) Nutrients
c) Growth factors
d) Sunlight

Answer 1

Specialized cells that are otherwise unable to divide require growth factors to trigger their division. Nutrients and oxygen are vital for cell functions, but growth factors specifically initiate cell division.

Step-by-step explanation:

Cells that renew constantly throughout life but have specialized cells that are unable to divide require growth factors to divide. While oxygen and nutrients are essential for cellular survival and function, specialized cells typically need growth factors to trigger the division process. Sunlight is not a requirement for cell division across all cell types, as many cells do not rely on light for metabolic processes. According to enduring understanding 2.B., growth and reproduction of cells necessitate that they create and maintain internal environments different from their external environments. Therefore, the correct answer is c) Growth factors.