Across
- 3. A flattened membrane sac inside the chloroplast, used to convert light energy into chemical energy.
- 5. Composed of Peptidoglycan; support to bacteria cells; tough, usually flexible but sometimes fairly rigid layer
- 8. An endomembrane system where lipids are synthesized and toxic substances are broken down.
- 9. An accessory pigment, either yellow or orange, in the chloroplasts of plants.
- 13. A dense region of DNA in a prokaryotic cell.
- 14. channels through cell walls that connect the cytoplasms of adjacent cells
- 16. A long, whiplike structure that helps a cell to move
- 18. A small ring of DNA that carries accessory genes separate from those of the bacterial chromosome
- 22. An organelle containing digestive enzymes
- 23. attachment structures on the surface of some prokaryotes
- 25. made of cellulose ; gives shape and support to plant cells; tough, usually flexible but sometimes fairly rigid layer
- 27. Control center of the cell
- 28. A jellylike fluid inside the cell in which the organelles are suspended
- 30. Found inside the nucleus and produces ribosomes
- 31. Powerhouse of the cell, organelle that is the site of ATP (energy) production
- 33. Appendages that allow bacteria to attach to each other and to transfer DNA
- 36. Covers the cell wall in prokaryotes.
- 37. group of plant organelles that are used for storage of starches, lipids, or pigments
- 39. membrane-bound storage bodies with various functions
- 41. A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
- 42. Fluid portion of cytoplasm
- 43. A complex molecule containing the genetic information that makes up the chromosomes.
- 44. Contain oxidase enzymes that detoxify alcohol, hydrogen peroxide, and other harmful chemicals
- 45. a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
- 46. Long, thin fibers made of actin that function in the movement and support of the cell
Down
- 1. System of internal membranes within the cytoplasm. Membranes are rough due to the presence of ribosomes. functions in transport of substances such as proteins within the cytoplasm
- 2. stored lipids are converted to carbohydrates
- 4. A structure in animal cells containing centrioles from which the spindle fibers develop.
- 6. A hollow rod composed of tubulin proteins that makes up the tracks of the cell
- 7. stack of thylakoids
- 10. Hairlike projections that extend from the plasma membrane and are used for locomotion
- 11. In plants, a thin layer of adhesive extracellular material, primarily pectins, found between the primary walls of adjacent young cells.
- 12. Substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones
- 15. Protein bound to the surface of the membrane
- 17. Integral proteins that span the membrane.
- 19. Contain a nucleus and other organelles that are bound by membranes.
- 20. An organelle found in plant and algae cells where photosynthesis occurs
- 21. fluid portion of the chloroplast; outside of the thylakoids
- 24. A selectively-permeable phospholipid bilayer forming the boundary of the cells
- 25. A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles; found only in the domains Bacteria and Archaea.
- 26. Tough flexible fibers that prevent the cell from stretching excessively in response to outside forces
- 29. membrane enclosing the central vacuole
- 32. Proteins that penetrate the hydrophobic interior of the lipid bilayer
- 34. A membrane bound sac that contains materials involved in transport of the cell.
- 35. Loosely attached to cell surface; Sticky layer allows prokaryotes to attach to surfaces
- 38. A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
- 40. site of protein synthesis