Across
- 2. on or in a cell, a specific protein to whose shape fits that of a specific molecular messenger, such as a hormone.
- 9. organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
- 11. the basic unit of all forms of life
- 12. flexible double-layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings.
- 14. group of tissues that work together to perform closely related functions.
- 15. when particles move from an area of high concentration to low concentration
- 17. group of organs that work together to perform a specific function.
- 18. thin flexible barriers that surround all cells. Regulates what enters and leaves the cell.
- 19. network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement
- 22. internal membrane system found in eukaryotic cells
- 23. the concentration of water and sugar will be the same on both sides of the membrane
- 24. means “above strength” the more concentrated sugar solution ( right side of the tube)
- 25. unicellular organism that lacks a nucleus.
- 26. organelle consisting of RNA and protein throughout the cytoplasm in a cell
- 28. strong, supporting layer around the cell membrane
- 29. property of biological membranes that allows some substances to pass across it while other cannot.
- 31. organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell.
- 33. organelle in cells that modifies, sorts and packages proteins and other materials from the endoplasmic reticulum
- 34. the center of an atom, which contains the protons and neutrons. Contains DNA.
Down
- 1. organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use.
- 3. specialized structure that performs important cellular functions within a eukaryotic cell
- 4. means “below strength” the more concentrated sugar solution (left side of the tube)
- 5. means “ same strength” water moves across the membrane until equilibrium is reached
- 6. domain consisting of all organisms that have a nucleus. Includes plants, fungi and animals.
- 7. organelle that stores materials such as water, salts, proteins and carbohydrates
- 8. group of similar cells that perform a particular function.
- 10. process of diffusion in which molecules pass across the membrane through membrane channels
- 13. relatively constant internal physical and chemical conditions that organisms maintain.
- 16. states all living things are made of cells. That cells are basic units of structure and function in living things. New cells are produced from existing cells.
- 20. a force produced by the difference in solution concentrate, net movement of water out or into a cell produces
- 21. structure in an animal cell that helps to organize cell division
- 27. the diffusion of water through a selectively permeable membrane
- 30. are water channel proteins known as proteins
- 32. in eukaryotic cells, all cellular contents outside the nucleus; in prokaryotic cells, all of the cells’ contents