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Bio 100 First Exam 2025 Questions and Answers Atoms, molecules - ....ANSWER☑️☑️...-Atoms- unit of matter that cannot be further broken down Molecles- the chemical components of cells Cell - ....ANSWER☑️☑️...-smallest living unit Tissue - ....ANSWER☑️☑️...-made of similar types of cells that work together Organ Systems - ....ANSWER☑️☑️...-made of different tissue types working together Organism - ....ANSWER☑️☑️...-individual, with organs and organ systems Population - ....ANSWER☑️☑️...-All individuals of a particular type (species) interacting in a particular place Community - ....ANSWER☑️☑️...-All the different type (species of organisms that may interact in a particular place Ecosystem - ....ANSWER☑️☑️...-All different type of of organisms, plus the nonliving (abiotic) components necessary for existence Biosphere - ....ANSWER☑️☑️...-The portions of atmosphere, ocean, and land where life exists on Earth Characteristics of a living organism - ....ANSWER☑️☑️...-composed of cells unique molecular composition FOR STUDY PURPOSES ONLY, ©️2025 ALL RIGHTS RESERVED 1