eläinsolu

Eläinsolu is the Finnish term for an animal cell. It is the basic structural and functional unit of all animal tissues. Animal cells are eukaryotic, meaning they possess a true nucleus and membrane-bound organelles. Unlike plant cells, animal cells lack a cell wall, chloroplasts, and a large central vacuole. Their outer boundary is the cell membrane, which regulates the passage of substances into and out of the cell.

Within the cytoplasm of an animal cell are various organelles, each with specific functions. The nucleus contains the genetic material (DNA) and controls cell activities. Mitochondria are responsible for generating energy through cellular respiration. The endoplasmic reticulum, both rough and smooth, is involved in protein and lipid synthesis, respectively. The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles. Lysosomes contain digestive enzymes to break down waste materials and cellular debris. Ribosomes are responsible for protein synthesis. Centrioles play a role in cell division. The cytoskeleton, composed of protein filaments, provides structural support and facilitates cell movement. Animal cells exhibit a wide range of shapes and sizes depending on their specific function within the organism.