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Study Guide Questions – Cell Unit 3 1. Who was Hooke? 2. What did Schleiden contribute to the cell theory? 3. What did Leeuwenhoek do? 4. What did Schwann contribute to the cell theory? 5. What did Virchow say about cells? 6. What do prokaryotes lack? 7. What do eukaryotes usually have? 8. List the three statements that describe the cell theory. 9. What structure contains the genetic material & controls activities? 10.What is found inside the nucleus? 11. What does the Golgi apparatus do? 12.List the functions of the cytoskeleton. Name the parts in the cytoskeleton that assist with these functions. 13.What is the main function of the cell wall? 14.What do lysosomes do? 15. _________ make proteins using coded instructions from the nucleus. 16. Name two organelles found in plant cells but not in animal cells. 17. What is the function of the cell membrane? 18. Within the cell membrane you will find pumps made of ______ that can move materials form one side to the other. 19. Define diffusion. 20. What type of transport requires energy from the cell? 21. The diffusion of water across a selectively permeable membrane is called ___. 22. When the concentration of dissolved substances is lower outside the cell than inside the cell it is _____. 23. When the concentration of the solute is the same on both sides of the cell membrane ____________ is reached. 24. Cells shrivel when they are in this type of solution. 25. Cells might swell and rupture when in this type of solution. 26. “Same strength” means this type of solution. 27. Water rushes out of the cell because the concentration of dissolved substances is higher outside the cell in this type of solution. 28. What is the difference between endocytosis and exocytosis? 29. Give examples of passive transport. 30. What is the major difference between facilitated diffusion and active transport? 31.What is the difference between phagocytosis and pinocytosis? 32. (True/False) Equilibrium is reached when there is continuous movement but no change. KNOW YOUR PLANT AND ANIMAL CELL DIAGRAMS TOO! Answers to study guide: 1. the 1st person to identify & see cells ( he was looking at cork cells) 2. all plants are made of cells 3. he was a Dutch lens maker and saw tiny organisms in pond water 4. Said all animals are made of cells 5. Said that cells come from existing cells 6. a nucleus 7. a nucleus and membrane-bound organelles 8. all living things are composed of cells, cells are the basic units of structure & function, new cells come from existing cells 9. nucleus 10.genetic material 11. attaches carbohydrates to proteins & moves them to their final destination 12.helps a cell to keep its shape/involved in cell movement microfilaments and microtubules 13.support & protect the cell 14.break down food particles (lipids, carbs, protiens) into particles that could be used by the cell and can break down other organelles that have outlived their usefulness 15.ribosomes 16.chloroplasts & cell walls 17.regulates materials that enter and leave the cell 18.protein 19.movement of particles from high to low concentration 20. active transport 21.osmosis 22. hypotonic 23. equillibrium 24. hypertonic 25. hypotonic 26. isotonic 27. hypertonic 28. endocytosis – cells take in substances [phagocytosis is when cells take in large clumps] exocytosis – cells move substances out 29. facilitated diffusion, osmosis, diffusion 30. active transport moves substances against the concentration gradient (low concentration to high) and requires energy from the cell [facilitated diffusion is still diffusion in that the molecules are moving from high to low concentration and is passive] 31.Phagocytosis is the movement of food into the cell and pinocytosis is the movement of water. 32. true