Across
- 4. Internal balance within systems of living organisms that must be kept stable in order to maintain life. Processes that maintain homeostasis include getting nutrition, expelling wastes, and responding to the environment
- 6. Type of passive transport in which substances can move across a cell membrane through special protein channels embedded in the membrane
- 9. Transports compounds around the cell and helps maintain the cell's shape; is studded with ribosomes and processes the proteins made by ribosomes
- 10. Cellular organelle that directs the protein-building process
- 14. Describes a solution whose solute concentration is greater than the solute concentration of the cytoplasm in a cell
- 16. Describe cells lacking a true nucleus and membrane-bound organelles
- 18. One of fundamental models of biology that states cells are smallest form of life, come from pre-existing cells, basic building block of all life forms, carry out life processes to maintain homeostasis
- 19. Cellular organelle that processes and packages proteins in preparation for secreting them from a cell
- 23. Transports compounds around the cell and helps maintain the cell's shape; processes fats and break down toxic substances in liver cells
- 24. Movement of substances across cell membrane from regions of low concentration to regions of high concentration by any means that requires the use of energy
- 27. Group of cells specialized to perform a particular function
- 28. Diffusion of water molecules through a semipermeable membrane
- 30. Non-membrane-bound region in prokaryotic cells that contains most of the genetic material
- 31. Organism consisting of only one cell
- 32. Structure within cells that help define their shape, maintain internal organization, and aids division and movement
- 33. Rigid structure made by cell of plants, fungi, and most bacteria to surround cell membrane
- 35. Short hair-like extension of a cell used either for movement or sensory organelle
- 36. Group of two or more organs that work together to perform a particular function
- 37. Cellular organelle that functions in organization of microtubules
- 39. Pressure exerted by water in a full central vacoule upon the cytoplasm and cell membrane of plant cell; maintains plant rrigidlyLeucoplast
- 41. Cellular signaling mechanism in which the product of a particular process inhibits the processitself
- 42. Whip-like cellular organelle similar in structure to a cilium but longer and used primarily for movement in many bacteria
Down
- 1. Describes a solution whose solute concentration is less than solute concentration of cytoplasm in a cell
- 2. Describes a solution whose solute concentration is equal to the solute concentration of the cytoplasm in a cell
- 3. Movement of substances across cell membrane without need of energy
- 5. Cellular irganelle that contains digestive enzymes
- 7. The thick fluid inside cells that contains the organelles. Also called cytosol
- 8. (1) Membrane-bound region of a eukaryotic cell that contains the genetic material
- 11. Organism consisting of two or more cells and whose cells may not live independently apart from the organism
- 12. Cellular organelle found in plant cells that contains the pigment chlorophyll and is site where photosynthesis takes place
- 13. Spherical structure within a eukaryotic cell's nucleus where ribosomes are manufactured
- 15. Organelle in plant cells that hold materials and helps maintain cell's shape through turgor pressure
- 17. Genetic material of eukaryotic cells consisting of DNA and associated proteins
- 20. Describes cells having true nucleus and membrane-bound organelles
- 21. Cellular signaling mechanism in which the product of a particular process enhances the process itself
- 22. Cellular organelle in which aerobic respiration tales place to release energy from food
- 25. Thin layer of phospholipids and proteins that defines boundary of cell
- 26. Structure made of two or more tissues that work together to perform a particular function
- 29. Two layers of phospholipids that make up a cell membrane
- 32. Protective coating found outside cell walls of many bacteria
- 34. (1)Individual organisms of the same species living closely together (2)group of cells that live and work together; may break away and survive on their own
- 38. Structures found within cytoplasm ofcells that perform various function cells need to stay alive
- 40. Stack of disk-shaped thylakoids within a chloroplast