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)?

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  1. Define (in terms of # of protons, neutrons, and/or electrons): Atomic Number and Atomic Weight.

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  1. 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: ______

  1. What is the difference between ionic and covalent bonding?

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  1. 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.
  1. According to the pH scale, what values define an acid? A base? Neutral?

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  1. Complete the table below on Organic Compounds:

Organic Compound / Building Blocks / Important function / Example
Glucose
Amino Acids
n/a / Fat
DNA, RNA
  1. What two elements BOTH must be found in organic compounds? Give me one example of an organic and inorganic compound.

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  1. What indicator is used to determine if starch is present in a compound? What does a positive test look like?

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  1. What indicator is used to determine if glucose is present in a compound? What does a positive test look like?

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  1. 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?

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  1. What does the Cell Theory state (hint: there are three parts)?

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  1. Define the function of the following cell organelles:
  2. Nucleus :
  3. Cell Membrane:
  4. Ribosome:
  5. Vacuole:
  6. Mitochondria:
  7. Chloroplast:
  8. Cell Wall:
  9. Endoplasmic Reticulum (smooth and rough):
  1. What 2 cell organelles are found in plant cells but NOT animal cells?

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  1. What is the equation for photosynthesis? What ORGANELLE does photosynthesis take place in?

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  1. What is the equation for cellular respiration? What ORGANELLE does cellular respiration take place in?

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  1. Draw a diagram to show the relationship/cycle between cellular respiration and photosynthesis.
  1. What can ATP be used for?

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  1. What does paper chromatography allow us to do (hint: use your review book)?

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  1. 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?

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  1. What do we call the reactants of an enzyme-catalyzed reaction? ______
  1. Where in an enzyme does the reaction take place? ______
  1. Why are enzymes like a lock and key? Explain.

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  1. What two environmental factors affect the function of an enzyme?

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  1. What is synthesis? ______

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