Cells Review Sheet I. Reviewing Key Concepts: On the lines provided, complete the following sentences. 1. All ____________________ are composed of cells. 2. Cells are the basic units of ____________ and ____________ in all organisms. 3. New cells are produced from __________________. 4. The cells of eukaryotes have a(an) ____________ ; the cells of _____________do not. 5. Eukaryotic cells also have a variety of specialized structures called _____________. LIVING THINGS STRUCTURE FUNCTION EXISTING CELLS NUCLEUS PROKARYOTES ORGANELLES

II. Reviewing Key Skills: Label each cell as either prokaryotic or eukaryotic. PROKARYOTES 6. _________________ 7. _________________ EUKARYOTES

8. Comparing and Contrasting: Explain the similarities and differences between a prokaryotic cell and a eukaryotic cell. ____________________________________________________________ 9. Applying Concepts: Are human cells prokaryotic or eukaryotic? Explain your answer. PROKARYOTIC HAVE only a few ORGANELLES HAVE NO NUCLEUS PRIMITIVE CELLS ONLY BACTERIA EUKARYOTIC HAVE ORGANELLES HAVE NUCLEUS MODERN CELLS All other living things. *ALL CELL TYPES HAVE CELL MEMBRANES, CYTOPLASM & DNA. EUKARYOTIC – BECAUSE THEY CONTAIN A NUCLEUS.

III. Word Bank Matching: Match the structure with its function in the cell. a. cell wall, b. nucleus, c. cytoskeleton, d. endoplasmic reticulum, e. Golgi apparatus, f. chloroplast, g. mitochondrion,   ____ 10. controls most cell processes and contains DNA ____ 11. uses energy from food to make high-energy compounds ____ 12. provides support and protection for the cell ____ 13. maintains cell shape with a network of protein filaments ____ 14. uses energy from sunlight to make food molecules ____ 15. site where lipid components of the cell membrane are assembled and where proteins are chemically modified ____ 16. modifies, sorts, and packages proteins and other materials from the ER B G A C F D E

IV. Reviewing Key Skills:   17. Inferring: Plants have cells that contain chloroplasts. Why must their cells contain mitochondria as well? ___________________________________________________________________ Chloroplasts make nutrients (food) through photosynthesis. Mitochondria perform cellular respiration by taking nutrients from the cell and turning it into energy.

18. Using Analogies: In some ways, a cell is analogous to a factory 18. Using Analogies: In some ways, a cell is analogous to a factory. Create an analogy describing the job of a lysosome within a cellular “factory.”   ___________________________________________________________________ Cell Membrane – security Nucleus- Supervisor Mitochondria- power source Golgi- packaging & deliveries Lysosome- custodial crew Vacuoles- warehouse Cytoskeleton- building frame Ribosomes- product (what you make) ER- assembly Cytoplasm- factory floor

19. Comparing and Contrasting: What structures make plant and animal cells different?   ___________________________________________________________________ Plant cells- Chloroplasts, cell wall, chlorophyll