Classification of Living Things Classification is defined as identification, naming, and grouping of organisms into a formal system based on similarities such as internal and external anatomy, physiological functions, genetic makeup, or evolutionary history. ... the external shapes and sizes of organisms as well as the anatomy and function of internal organs and organ systems, such as the digestive or reproductive systems. Biochemists study and compare the molecular interactions within an organism that enable it to grow, make and store energy, ... of protists, and they live in many differe...

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... - protein synthesis endoplasmic reticulum (ER) - transport within the cell rough ER - ER with ribosomes Golgi apparatus - packages protein for secretion and modifies proteins prior to secretion lysosome - contains digestive enzymes that remove wastes and toxins vacuole - membrane bound storage areas (only plants have a large central vacuole) vesicle - a small vacuole centriole - a part of the cytoskeleton in animal ... in some systematic way? You know, to organize groups based on relationships so that the groups make some sense? I think it would - and it turns out such a system has alre...

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• Grade Level: High School

... as tissues. A tissue is a group of similar cells that preform similar functions. Different tissues form many different tasks. For example, a kind of tissue is made up of cells that produce digestive enzymes in the pancreas, and the cells in an eye respond to light. Most multicellular organisms have four main types of tissues: muscle, epithelial, nerve, and connective. Some tasks in ... a group of organs that work together to preform one function. There are many organ systems in our body. We have a muscular system, skeletal system, nervous system, and circulatory system. Multicellular Or...

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• Grade Level: High School