All About Cells

3. The organelle in which nutrients are converted to energy
4. A solution in which the concentration of solutes is less than that of the cell that resides in the solution
6. A plastid that contains chlorophyll and in which photosynthesis takes place
8. A Membrane-bound "sac"
10. Non-membrane-bounded organelles responsible for protein synthesis
12. In this type of transport, the movement of molecules through the plasma membrane requires ATP
15. A solution in which the concentration of solutes is greater than that of the cell that resides in the solution
17. Holds animal cells together and helps them to maintain shape
18. A network of fibers that hold the cell together
19. Allow charged ions(which cannot just diffuse across the membrane) to pass through
21. A polymer composed of two polynucleotide chains that coil around each other to form a double helix
23. The organelles where proteins and lipids are stored and then modified to suit the needs of the cell
24. A lipid in which one of the fatty acid molecules has been replaced by a molecule that contains a phosphate group
25. The center of the nucleus where RNA is made and ribosomes are assembled

1. A jellylike fluid inside the cell in which organelles are suspended
2. The organelle in animal cells responsible for breaking stuff down through hydrolysis
5. Holds the main DNA, "Control center" of the cell
7. Spiral strands of protein molecules that form a tubelike structure
9. A small fluid-filled "sac"
11. An organelle composed of an extensive network of folded membranes that perform several tasks within a cell
13. A rigid structure on the outside of certain cells
14. A short, numerous cell projection that moves rhythmically back and forth
16. The semi-permeable membrane between the cell contents and either the cell wall or the cells surroundings
20. A long, thin projection from the cell surface that propels cells by whipping back and forth
22. In this type of transport, the movement of molecules through the plasma membrane does not require ATP