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A researcher is studying the basic building blocks of life. They isolate a molecule that contains carbon, hydrogen, and oxygen, is water-insoluble, and plays roles in energy storage, membrane structure, and hormone production. This molecule is most likely a:
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A student is sketching a diagram of the human skeleton. They are instructed to draw a bone that is longer than it is wide, with a shaft and two ends, primarily responsible for support and movement. This type of bone is classified as a:
