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Name: ___________________________________________ Class: ________________ Date: ______________________ Unit 2 Review Sheet (10/03 – 10/24) 1. What are the 3 particles that make up an atom? What are their charges (positive, negative, neutral)? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 2. Define (in terms of # of protons, neutrons, and/or electrons): Atomic Number and Atomic Weight. ___________________________________________________________________________________________ ___________________________________________________________________________________________ 3. Use the following information about Carbon to determine the number of protons, neutrons and electrons in a neutral atom of Carbon: Atomic Weight = 12, Atomic Number = 6 # protons: __________ # neutrons: __________ # electrons: __________ 4. What is the difference between ionic and covalent bonding? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 5. What type of bonding (or “attraction”) allowed me to “float” a paperclip on top of water? Why does a water molecule have “partial charges?” What do we call this? Draw a few water molecules to show how this bonding occurs between water molecules. 6. According to the pH scale, what values define an acid? A base? Neutral? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 7. Complete the table below on Organic Compounds: Organic Compound Building Blocks Important function Example Glucose Amino Acids n/a Fat DNA, RNA 8. What two elements BOTH must be found in organic compounds? Give me one example of an organic and inorganic compound. ___________________________________________________________________________________________ ___________________________________________________________________________________________ 9. What indicator is used to determine if starch is present in a compound? What does a positive test look like? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 10. What indicator is used to determine if glucose is present in a compound? What does a positive test look like? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 11. What indicator is used to determine if a solution is acidic or basic? What do the results look like if the solution is acidic? Basic? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 12. What does the Cell Theory state (hint: there are three parts)? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 13. Define the function of the following cell organelles: a. b. c. d. e. f. g. h. (smooth and rough): 14. Nucleus : Cell Membrane: Ribosome: Vacuole: Mitochondria: Chloroplast: Cell Wall: Endoplasmic Reticulum What 2 cell organelles are found in plant cells but NOT animal cells? ___________________________________________________________________________________________ 15. 16. What is the equation for photosynthesis? What ORGANELLE does photosynthesis take place in? ___________________________________________________________________________________________ What is the equation for cellular respiration? What ORGANELLE does cellular respiration take place in? ___________________________________________________________________________________________ 17. Draw a diagram to show the relationship/cycle between cellular respiration and photosynthesis. 18. What can ATP be used for? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 19. What does paper chromatography allow us to do (hint: use your review book)? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 20. What is a catalyst? What do we call a biological catalyst? What type of organic molecule (carbohydrate, lipid, protein or nucleic acid)is the biological catalyst? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 21. What do we call the reactants of an enzyme-catalyzed reaction? ______________________________________ 22. Where in an enzyme does the reaction take place? _________________________________________________ 23. Why are enzymes like a lock and key? Explain. ___________________________________________________________________________________________ ___________________________________________________________________________________________ 24. What two environmental factors affect the function of an enzyme? ___________________________________________________________________________________________ 25. What is synthesis? ___________________________________________________________________________________________ ___________________________________________________________________________________________