Question

Which of the following must unicellular organisms do to maintain homeostasis?

A. Use chemical signals to communicate between its cells
B. Change food or sunlight into useful energy
C. Specialize cells to perform specific functions
D. Organize cells into tissues

Answer 1

B. Change food or sunlight into useful energy

Answer 2

The correct answer is B. change food or sunlight into useful energy.

Maintaining constant internal environment by self-regulatory mechanism by an organism is called homeostasis. Like multicellular organisms, unicellular organisms such as Amoeba, Chlamydomonas also maintain constant internal environment. Each unicellular organism requires food or other energy source.to maintain water and minerals concentrations within the cell up to a certain levels and quickly to respond to changes in its environment.