Cell vocab

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Across
  1. 2. a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.
  2. 4. system- An organ system is a group of organs that work together as a biological system to perform one or more functions.
  3. 9. the soluble portion of the cytoplasm, which includes molecules and small particles, such as ribosomes, but not the organelles covered with membranes
  4. 11. In biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
  5. 12. theory- the theory that states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells
  6. 13. a group of similar cells that perform a common function
  7. 14. a long, hairlike structure that grows out of a cell and enables the cell to move
  8. 16. membrane- or cell membrane, the cell's outer boundary
  9. 18. vacuole- a large cavity or sac that is found in plant cells or protozoans and that contains air or partially digested food
  10. 22. one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
  11. 26. a green pigment that is present in most plant and algae cells and some bacteria, that gives plants their characteristic green color, and that absorbs light to provide energy for photosynthesis
  12. 29. an organelle that is active during mitosis
  13. 30. a cell organelle that contains digestive enzymes
  14. 31. apparatus- a cell organelle that helps make and package materials to be transported out of the cell
  15. 32. Bilayer- a double layer of phospholipids that makes up plasma and organelle membranes
Down
  1. 1. one of the small, tubular fibers composed of the protein tubulin that are found in the cytoplasm of eukaryotic cells, that compose the cytoskeleton, and that play a role in cell structure and movement
  2. 3. a fiber found inside eukaryotic cells that is composed mainly of the protein actin and that has a role in cell structure and movement
  3. 5. a single-celled organism that does not have a nucleus or membrane-bound organelles; examples are archaea and bacteria
  4. 6. the region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus
  5. 7. an organelle of plant cells that contains specific substances and performs specific functions for the cell
  6. 8. envelope- is made up of two lipid bilayer membranes which in eukaryotic cells surrounds the nucleus
  7. 10. a small dense spherical structure in the nucleus of a cell during interphase.
  8. 15. in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP
  9. 17. a collection of tissues that carry out a specialized function of the body
  10. 19. a membrane system found within chloroplasts that contains the components for photosynthesis
  11. 20. a hairlike structure arranged in tightly packed rows that projects from the surface of some cells
  12. 21. 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
  13. 23. in physical science, an atom's central region, which is made up of protons and neutrons
  14. 24. an organism made up of cells that have a nucleus enclosed by a membrane, multiple chromosomes, and a mitotic cycle; eukaryotes include protists, animals, plants, and fungi but not archaea or bacteria
  15. 25. an organelle found in plant and algae cells where photosynthesis occurs
  16. 26. in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA
  17. 27. the cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division
  18. 28. wall- a rigid structure that surrounds the cell membrane and provides support to the cell