The document defines and describes 10 key organelles and structures found within cells: chromosomes, mitochondria, vacuoles, lysosomes, Golgi body, endoplasmic reticulum, nucleolus, ribosomes, nucleus, and anatomy. It provides brief descriptions of the function of each organelle, identifying chromosomes as carrying hereditary information, mitochondria as the power house of the cell, and vacuoles as storage sacs.