Cells - smallest functional unit in an organism. Cells are the building blocks of life, cell membrane - subcellular structure that controls which substances can move into and out of the cell, cell wall - subcellular structure that surrounds the cell, providing support, chloroplast - subcellular structure where photosynthesis takes place, cytoplasm - a ‘jelly-like’ substance found in cells, where all the chemical reactions take place, electron microscope - a microscope which uses electrons to produce an image, eukaryotic cell - cell whose genetic material is contained within the nucleus, flagellum - a ‘tail-like’ structure which allows cells to move, mitochondria - subcellular structure where respiration takes place, nucleus - subcellular structure that controls the cell, and contains genetic material, plasmid - a circular ring of DNA found in a bacterial cell, prokaryotic cell - cell without a nucleus, whose genetic material is found within the cytoplasm, resolution - a measure of the smallest object which can be seen using an instrument, vacuole - subcellular structure that contains cell sap and helps to keep the cell firm,

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