Science 10 Biology Unit Review PDF

Science 10: Biology Unit Review Name: _________________ 1. List the characteristics of life. 2. Distinguish between a hypothesis and a theory. 3. Define spontaneous generation. 4. What caused the belief of abiogenesis to change? What did it change to? 5. Summarize the...

Science 10: Biology Unit Review Name: _________________ 1. List the characteristics of life. 2. Distinguish between a hypothesis and a theory. 3. Define spontaneous generation. 4. What caused the belief of abiogenesis to change? What did it change to? 5. Summarize the work of Redi and Pasteur in disproving abiogenesis. 6. How were each of the following instrumental in the development of the cell theory: a) Robert Hooke b) Antony van Leeuwenhoek c) Schleiden and Schwann d) Rudolf Virchow 7. List some guidelines on proper care and handling of the microscope.  2 8. What part of the microscope does each of the following: a) adjust light levels b) hold the slide (2 parts) c) change objective lenses d) the part you look through e) fine tuning 9. Differentiate between the compound light microscope and the stereoscopic microscope. 10. Complete the following chart: Microscope Description Scanning electron microscope Uses a metal probe, where electrons flow from its tip to the specimen; shows surface contours and creates a 3-D image Confocal laser scanning microscope Works like a slide projector; a beam of electrons is transmitted through a specimen to produce a 2-D image 11. How does the way you view an image on a light microscope differ from the actual position of the image? 12. List the steps to making a wet mount slide, in your own words. 13. What is the total magnification of a microscope with an objective lens of 4x and an eyepiece of 20x? Show your work.  3 14. What is the size of an object if you can fit 10 across a medium power field of view? Show your work. 15. What is the magnification of your drawing if you measure your drawing as 38 mm, using the size of object from the previous question? Show your work. 16. Distinguish between a prokaryotic cell and a eukaryotic cell. 17. Complete the following chart: Organelle Function Cell membrane Materials are degraded with the help of digestive enzymes Mitochondria Rough endoplasmic reticulum Synthesizes lipids and packages large molecules in vesicles Golgi apparatus Cell wall Play a role in cell division Controls all cell activities chloroplasts A storage space for water, food, and minerals  4 18. What are the differences between plant and animal cells? 19. Draw a sketch of several phospholipid molecules making up a bilayer and label the head and tail of one molecule. Specify which is hydrophilic and which is hydrophobic. 20. How is the membrane like a fluid? 21. Explain what selectively permeable means. 22. ____________________ is the idea that particles in liquid or air are in constant, random motion. 23. Explain (or draw) an example of a concentration gradient. 24. Particles move down a concentration gradient to establish ____________________. 25. What is the difference between passive and active transport? 26. Explain each of the following types of passive transport: diffusion – osmosis-  5 facilitated transport- 27. Define hypotonic, hypertonic, and isotonic. 28. Explain endocytosis and exocytosis. 29. What is receptor-mediated endocytosis? 30. What size and shape of a cell is the most efficient? Why?