LEVELS OF ORGANIZATION CARD SORT basic unit of life tree, dog, and the smallest bacteria, yeast, unit capable of human reproduction brain, lungs a collection of organs that work together to perform a similar function nervous, circulatory, ly,phatic meets the caracteristics of living things TISSUES connective, muscle, epithelial, nervous contains parenchyma tissue, stroma, and epithelial tissue made up of different tissues that perform specific bodily finctions urinary, reproductive skin, heart can be prokaryotic or eukaryotic ORGAN SYSTEMS Integulmentary, muscular ORGANS groups of similar cells that carry out a specific function together CELLS respiratory, endocrine, colon, liver maintain homeostasis and can be hollow or digestive, physiological solid skeletal funcrtions for the organism ORGANISM kidneys