Cell Biology

5. the basic structure and functional unit of all organisms
6. a thin membrane enclosing the cytoplasm of a cell
7. having a single basic functional unit, of an organism
8. a specialized part of a cell; analogous to an organ
9. the theory that cells form the fundamental structural and functional units of all living organisms
10. a particle in a cell that helps synthesize proteins
11. deoxyribonucleic acid, material that carries genetic information in a cell
12. a cell that is a structural and functional unit of a plant
14. an organic compound essential to living cells
15. transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient
16. formation of compounds in plants aided by radiant energy
20. a tiny cavity filled with fluid in cytoplasm of a cell
22. diffusion of molecules through a semipermeable membrane
23. the process by which a cell divides into two new cells
24. transport transport of a substance across a cell membrane by diffusion

1. part of a cell involved in energy production
2. the metabolic processes whereby certain organisms obtain energy from organic molecules
3. a netlike structure in the cytoplasm of animal cells
4. a rigid layer of polysaccharides enclosing a plant membrane
9. the process in reproduction and growth by which a cell divides to form daughter cells
13. a threadlike strand of DNA that carries genes
17. a part of the cell responsible for growth and reproduction
18. consisting of many basic structural and functional units
19. cell division that produces reproductive cells
21. part of an organism consisting of an aggregate of cells