Biology Chapter 7-2 Cell Structure Vocabulary
Cell Membrane thin flexible barrier around a cell; regulates what enters and leaves the cell
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Cell Wall strong, supporting layer around the cell membrane in plants, algae, and some bacteria
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Chloroplast organelle found in cells of plants and some other organisms that captures the energy from the sunlight and coverts it into chemical energy
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Cytoplasm the portion of the cell outside the nucleus
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Cytoskeleton (microfilaments and tubules) network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement
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Endoplasmic Reticulum internal membrane system; the site where lipid components of the cell membrane are assembled, along with proteins and other materials that are exported from the cell
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Golgi apparatus (golgi body) stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum
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Lysosome small organelles filled with enzymes
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Mitochondria cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use
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Nucleolus small, dense region within most nuclei in which the assembly of proteins begins
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Nucleus structure that contains the cell's genetic material and controls the cell's activities
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Ribosomes small particles in the cell upon which proteins are assembled; made of RNA and protein
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Vacuole saclike structures that store materials such as water, salts, proteins, and carbohydrates
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