Chemistry Of Life Quiz 3

20 Questions | Total Attempts: 148

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The Chemistry Of Life Quizzes & Trivia

This quiz will help you check your understanding of vocabulary and concepts needed for Unit 2 of the MCPS Biology course.


Questions and Answers
  • 1. 
    Which of the following is NOT a good source for carbohydrates?
    • A. 

      Olive oil

    • B. 

      Spaghetti

    • C. 

      Cereal

    • D. 

      Banana

  • 2. 
    Which group contains ONLY monomers?
    • A. 

      carbohydrates, proteins, nucleic acids

    • B. 

      Cereal, table sugar, cellulose

    • C. 

      monosaccharide, amino acid, nucleiotide

    • D. 

      Carbon, hydrogen, oxygen, nitrogen

  • 3. 
    Which element, found in proteins, is NOT present in carbohydrates or lipids?
    • A. 

      Carbon

    • B. 

      Hydrogen

    • C. 

      Oxygen

    • D. 

      Nitrogen

  • 4. 
    What statement about proteins, lipids, nucleic acids, and carbohydrates is NOT true?
    • A. 

      They are all organic.

    • B. 

      They all contain carbon.

    • C. 

      They all contain nitrogen.

    • D. 

      They are found in living things.

  • 5. 
    Which of the following is a major component of cell membranes?
    • A. 

      Carbohydrate

    • B. 

      Lipids

    • C. 

      Proteins

  • 6. 
    Starch belongs to which group of macromolecules?
    • A. 

      Protein

    • B. 

      Vitamin

    • C. 

      Carbohydrate

  • 7. 
    Animals use _________ for long-term energy storage.
    • A. 

      Lipids

    • B. 

      Carbohydrates

    • C. 

      Proteins

  • 8. 
    Which of the following is an example of a nucleic acid?
    • A. 

      Amino acid

    • B. 

      Phosphate

    • C. 

      DNA

  • 9. 
    Which of the following is an example of a nucleic acid?
    • A. 

      Amino acid

    • B. 

      Phosphate

    • C. 

      DNA

  • 10. 
    Water is used as a control in experiments to test for the presence of various organic compounds.  The reason for this is that ________________.
    • A. 

      Water is inexpensive and therefore it is easy to use

    • B. 

      Water is an excellent solvent and soak up all of the chemicals that are used.

    • C. 

      Water is NOT an organic molecule and therefore it is good to use for comparison.

  • 11. 
    DNA and RNA are examples of __________.
    • A. 

      Polysaccharides

    • B. 

      Amino acids

    • C. 

      Proteins

    • D. 

      Nucleic acids

  • 12. 
    If the left side of the beaker were hypertonic compared to the right side, what would happen to the level of water on both sides?
    • A. 

      The left side would go up and the right side would go down.

    • B. 

      The right side would go up and the left side would go down.

    • C. 

      The level of water on both sides of the beaker would stay the same.

  • 13. 
    If the concentration of solute is the same both inside a cell and in the solution it's placed into, then the solution is said to be _____________.
    • A. 

      Hypertonic

    • B. 

      Hypotonic

    • C. 

      Isotonic

  • 14. 
    A fish that is accustomed to living in salt water is placed in fresh water.  What do you predict might happen to the cells of the fish?
    • A. 

      They might shrink up and cause the fish to die.

    • B. 

      They would become healthier because the water is so fresh.

    • C. 

      They might burst and cause the fish to die.

  • 15. 
    A piece of potato is placed in pure water.  The potato cells are not 100% water.  Relative to the potato cells, the pure water is ___________.
    • A. 

      Isotonic

    • B. 

      Hypertonic

    • C. 

      Hypotonic

  • 16. 
    A cell is placed in a hypertonic solution.  This means that the percentage of water is ___.
    • A. 

      Greater in the solution.

    • B. 

      Greater in the cell

    • C. 

      The same in the cell and the solution.

  • 17. 
    A cell that is 95% water is placed inside a solution that is 100% water.  What will happen?
    • A. 

      The cell will swell because water will enter it.

    • B. 

      The cell will swell because it will produce more sugar.

    • C. 

      The cell will shrink because it has less water than the solution.

  • 18. 
    The process in which energy is released for use by the cell is called ______. (Be careful!!)
    • A. 

      The mitochondrion

    • B. 

      Respiration

    • C. 

      The chloroplast

    • D. 

      Photosynthesis

  • 19. 
    The cell wall of a plant is composed mainly of ____________.
    • A. 

      DNA

    • B. 

      A carbohydrate

    • C. 

      A thin layer of phospholipid molecules

    • D. 

      Nucleic acids

  • 20. 
    The carbohydrate which make up the cell wall is mainly _______.
    • A. 

      Cellulose

    • B. 

      Glucose

    • C. 

      Fructose

    • D. 

      Disaccharide

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