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Refers to the microscopic level of individual cells within a living organism. It involves studying structures, processes, and interactions at the cellular level to understand biological phenomena.
Specialized cells that transmit information through electrical signals; they are responsible for communication within the nervous system.
Cell Membrane: A protective barrier surrounding all living cells that controls what substances can enter or exit the cell.
Mitochondria: Organelles found in cells responsible for producing energy through cellular respiration.