organelle - tiny structures within the cell, cell - basic building blocks of life, smallest unit of life, cytoplasm - gel-like fluid inside of a cell, cell membrane - thin, flexible outer layer. Controls what enters and leaves a cell, nucleus - control center of cell, DNA - genetic instructions for cell. Located in nucleus, cell wall - Provides shape and support for cell, mitochondria - "powerhouse of the cell". Provides energy through respiration, chloroplast - Sites where photosynthesis takes place, vacuole - temporary storage centers for water and waste, diffusion - materials move across the cell membrane (higher to lower concentrations), unicellular - one-celled, multicellular - many celled organism, prokaryote - No nucleus (DNA in circular loop), eukaryote - Does have a nucleus,

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