Cell Structure and Function

3. play a major role in cell division (mitosis)
5. do not have a nucleus and are more simple
7. concluded that all animals are made of cells
12. apparatus receives proteins from the rER and distributes them to other organelles or out of the cell (receiving, processing, packaging, and shipping)
13. membrane, selectively permeable boundary between the cell and the external environment
14. storage center of cell's DNA
16. location of protein synthesis
19. only in plant cells and where photosynthesis happens
20. the first person to observe living cells
22. surrounds the organelles
24. invented first microscope and observed "little boxes" which he called cells in cork
25. wall boundary around the plant cell outside of the cell membrane that provides structure and support

1. an example is bacteria
2. degrades hydrogen peroxide
4. determined that cells come from only other cells
6. reticulum intercellular highway
8. ER prominent in cells that make large amounts of proteins to be exported from the cell or inserted into the cell membrane (covered with ribosomes)
9. concluded that all plant are made of cells
10. used for temporary storage of wastes, nutrients, and water
11. converts energy stored in food into usable energy for work
15. and flagella cell motility
17. have a nucleus and are more complex
18. ER involved in the synthesis of lipids and breakdown of toxic substances (not covered with ribosomes)
21. examples are animals, plants, fungi, and protists
23. breaks down food particles, invading objects, or worn out cell parts