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a phospholipid layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment
one of the small bodies in a cell's cytoplasm that are specialized to perform a specific function
in a eukaryotic cell, a membrane-bound organelle that contains the cell's DNA and that has a role in processes such as growth, metabolism, and reproduction
a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration
cell organelle that helps make and package materials to be transported out of the cell
a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell
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