It's a pretty common symbol, mostly in the U.S. How ever it is two snakes with a set of wings, this stands for medicine instead of the correct rod of asclepius. I hope in some way this helps.
What don't you understand?
Answer: Organelle
Explanation: A nucleus is an organelle that functions as the cell's brain, regulating its production of proteins and genetic material. The nucleus governs the cell's production of these substances by means of its deoxyribonucleic acid or DNA. ... It contains information that determines the cell's purpose and function.
well...Physiologically, it is the body's attempt to maintain a constant and balanced internal environment, which requires persistent monitoring and adjustments as conditions change.