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Organ

/ˈôrgən/ Noun, pl. organs (Biology) 1. A collection of tissues joined in a structural unit to serve a common function. (wikipedia.org) 2. A part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans. (Google Dictionary) Word origin: The meaning “body part adapted to a certain function” is attested from late 14c., from a Medieval Latin sense of Latin...

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Organism

/ˈôrgəˌnizəm/ Noun, pl. organisms 1. An individual animal, plant, or single-celled life form. (wikipedia.com) 2. The material structure of such an individual. (wikipedia.com) 3. Any contiguous living system (such as animal, fungus, micro-organism, or plant). In at least some form, all types of organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole.(wikipedia.com) 4. A discrete and complete living thing, such as animal, plant, fungus or microorganism. (wiktionary.com)   Word origin: Greek ὀργανισμός – organismos, from Ancient Greek ὄργανον – organon (instrument, implement, tool, organ of sense or...

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Confused about the MCAT? Not sure how to prepare? This guide will show you how