Across
- 2. the smallest structural and functional unit of an organism
- 8. total of all chemical reactions that take place in our cells
- 9. energy producers in the cell that carry our cellular respiration to produce energy for the cell
- 11. tough, rigid structure that surrounds the cell membrane and ives the cell a rectangular, box-like shape
- 13. the substance in a nucleus that carries the heredity materials that is passed on from generation to generation
- 15. a network of membrane-covered channels that transport materials
- 17. cell parts that assemble proteins
- 18. a cell structure containing digestive chemicals that function to break down food particles, cell wastes and worn-out cell parts
- 19. movement of particles from an area of higher concentration to that of a lower concentration
- 20. a process in which the chemical energy taken in through food is changed into energy that cells use to carry out activities
- 21. a cell structure in which functions are carried for its survival
- 22. a structure in cells that sorts proteins and pack them into vesicles
- 23. chemical reaction that takes place
- 24. jelly-like substance within a cell, containing organelles, water and other life-supporting materials
- 26. tiny non-living particles capable of reproducing only when they are inside a host cell; they ahem no nucleus or organelles and are usually disease causing
- 27. a thin protective covering that separates the interior of a cell from its surroundings; also controls the movement of particles into and out of the cell
- 28. organelle that controls all the activities within a cell
Down
- 1. an individual animal, plant, or single-celled life form.
- 2. refers to the amount of substance in a given space
- 3. a membrane that allows some materials to pass through it but keeps other materials out
- 4. any of single celled micro-organisms; some cause diseases
- 5. parts of plants that trap energy from the sun and change it into chemical energy
- 6. membrane-wrapped structures that carry proteins, nutrients, and water into, out of, and around the inside of a cell
- 7. temporary storage compartments that sometimes store waste
- 10. diffusion of water particles through a selectively permeable membrane
- 12. a state in which there are same number of particles on both sides of the cell membrane
- 14. type of cell whose organelles are surrounded by membranes
- 16. type of cell whose organelles are not surrounded by membranes
- 25. essential nutrients used to build muscles, skin, and hair