Download Biomolecules Test Review

Name: __________________________________________________ Date: _____________________ Block: ____________
Chapter 2 Test Review
Fill in the blanks with the correct biomolecule: protein, lipid, carbohydrate, nucleic acid.
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_______________________ Used by the body for long term energy.
_______________________ Contains carbon, hydrogen, oxygen, and nitrogen
_______________________ Two types are monosaccharides and disaccharides.
_______________________ Used by the body for quick energy.
_______________________ Contains carbon, hydrogen, oxygen, nitrogen, and phosphorus.
_______________________ Used by the body for insulation.
_______________________ An example is an enzyme.
_______________________ Tuna and other meats contain much of this.
_______________________ Pasta contains much of this.
_______________________ Stores information in your cells in the form of a code.
_______________________ Building block in an amino acid.
_______________________ Butter contains much of this.
_______________________ Used in the exoskeleton of insects.
_______________________ Helps transport oxygen in blood.
_______________________ Can be used in murder trials.
_______________________ Building block is a glycerol with three fatty acids
_______________________ Made of nucleotides
_______________________ DNA and RNA are examples.
19. Label the following compounds as organic or inorganic.
_______________ C6H12O6
________________ H2O
________________ CH4
_______________ NH3
_______________ CO2
_______________ H2O2
20. Identify the biomolecule shown below.
a. ______________________________________
b. ______________________________________
c. ______________________________________
d. ______________________________________
Enzymes
21. What is the function of an enzyme? _________________________________________________________________
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22. What does it mean to catalyze a chemical reaction? _________________________________________________
23. What happens to an enzyme if you overheat or change its pH? _______________________________________
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24. True or False: Enzymes regulate most chemical reactions or activities in the body.
25. What category of biomolecules are enzymes? _________________________________________________________
Water
26. What is the pH of an acid? ___________________ What is the pH of a base? ___________________
27. What is the pH of a neutral? ___________________ What is the pH of pure water? ___________________
28. Which is the stronger acid: pH 5 or pH 1? Why? (refer to the amount of H+ or OH- ions!) ________________
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29. Which is the stronger base: pH 8 or pH 9? Why? (refer to the amount of H+ or OH- ions!) _______________
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30. Draw two water molecules. Label the hydrogen bond and explain water’s polarity below.
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31. Why don’t lakes freeze solid? ________________________________________________________________________
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32. What happens to the water in your body when you are hot? How does this help you? ___________________
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33. Water is the universal solvent. What does this mean? _________________________________________________
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34. Differentiate between capillary action, cohesion, and adhesion. _______________________________________
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Chemistry:
35. Use the periodic table of elements to complete the chart below.
Element
Calcium
Oxygen
Fluorine
Neon
Chlorine
Symbol
Atomic #
Atomic
Mass
Protons
Neutrons
Electrons
Valence
#
Dot
Diagram
Match the correct term with the description. Answers may be used more than once.
_____36. bonds formed when electrons are shared
_____37. bonds formed when electrons are transferred between atoms
_____38. bonds formed between water molecules, creating cohesion/adhesion
_____39. bonds formed between the hydrogen and oxygen atoms in a water molecule
_____40. bonds holding the amino acids together in proteins
_____41. attraction allowing the gecko’s feet to climb vertical surfaces
a.
b.
c.
d.
e.
peptide
covalent
ionic
hydrogen
van der Waals
Review:
42. Differentiate between an observation and an inference. _______________________________________________
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Carmen is a long distance runner and wants to determine which food will give her the most energy. She
monitors her times over a three week period. For every race she runs one mile, at the same time of day,
in the same weather conditions. Her data is shown below:
Week
Food Eaten
Time
1
2
3
Lipids
Carbohydrates
Proteins
6:25
6:03
6:14
43. What is the independent variable in this experiment? ________________________________________________
44. What is the dependent variable in this experiment? _________________________________________________
45. List 3 constants in this experiment. __________________________________________________________________
46. List the 8 characteristics of life
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