Cells

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  1. 3. A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.
  2. 4. A short cellular appendage specialized for locomotion, formed from a core of nine outer doublet microtubules and two inner single microtubules ensheathed in an extension of plasma membrane.
  3. 6. A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins.
  4. 9. A membranous sac formed by phagocytosis.
  5. 13. A network of microtubules, microfilaments, and intermediate filaments that branch throughout the cytoplasm and serve a variety of mechanical and transport functions.
  6. 14. A dense region of DNA in a prokaryotic cell
  7. 15. A solid rod of actin protein in the cytoplasm of almost all eukaryotic cells, making up part of the cytoskeleton and acting alone or with myosin to cause cell contraction.
  8. 16. A membrane enclosed bag of hydrolytic enzymes found in the cytoplasm of the eukaryotic cells
  9. 19. One of a family of closely related plant organelles, including chloroplasts, chromoplasts, and amyloplasts (leucoplasts).
  10. 20. A hollow rod of tubulin protein in the cytoplasm of all eukaryotic cells and in cilia, flagella, and the cytoskeleton
  11. 21. A membranous sac in a mature plant cell with diverse roles in reproduction, growth, and development.
  12. 22. An organelle found in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water.
  13. 23. The complex of DNA and proteins that makes up eukaryotic chromosomes. When the cell is not dividing, chromatin exists in its dispersed form, as a mass of very long, thin fibers that are not visible with a light microscope
  14. 24. The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition.
  15. 26. A sac made of membrane inside of cells
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  1. 1. An organelle in eukaryotic cells consisting of stacks of flat membranous sacs that modify, store, and route products of the endoplasmic reticulum.
  2. 2. The chromosome containing organelle of a eukaryotic cell
  3. 5. An extensive membranous network in eukaryotic cells, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribosome-free (smooth) regions.
  4. 6. A structure in an animal cell composed of cylinders of microtubule triplets arranged in a 9 and 0 pattern. An animal usually has a centrosome with a pair of centrioles involved in cell division.
  5. 7. A hollow rod of tubulin protein in the cytoplasm of all eukaryotic cells and in cilia, flagella, and the cytoskeloton
  6. 8. A specialized structure in the nucleus, formed from various chromosomes and active in the synthesis of ribosomes
  7. 9. A long cellular appendage specialized for locomotion.
  8. 10. Material present in the cytoplasm of all eukaryotic cells, important during cell division; the microtubule-organizing center.
  9. 11. a membranous sac formed that helps move water out of the cell.
  10. 12. An organelle in eukaryotic cells that serve as the site of cellular respiration
  11. 17. A solid rod of actin protein in the cytoplasm of almost all eukaryotic cells, making up part of the cytoskeleton
  12. 18. The entire contents of the cell, exclusive of the nucleus, and bounded by the plasma membrane.
  13. 25. A cell organelle constructed in the nucleolus and functioning as the site of protein synthesis in the cytoplasm; consists of rRNA and protein molecules, which make up two subunits.