Animal Cell Diagram: An animal cell is a eukaryotic structure that contains several key organelles, each with specific functions crucial for the cells survival. The nucleus is the control center housing DNA, surrounded by the nuclear envelope. The cytoplasm is the gel-like fluid where all cellular components reside. The endoplasmic reticulum (smooth and rough) aids in the synthesis of lipids and proteins. The Golgi apparatus processes and packages proteins, while mitochondria serve as the cells powerhouse. Lysosomes are responsible for breaking down waste materials, and centrioles play a role in cell division. The cell membrane encloses the cell, regulating what enters and exits, and this diagram often labels each part for educational clarity.