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Chapter Practice Test



This activity contains 23 questions.

Question 1
1 Which of the following is a property of matter?
 
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Question 2
2 Which of the following best defines potential energy?
 
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Question 3
3 Something with a pH of 5 would __________.
 
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Question 4
4 All organic molecules contain carbon.
   
 
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Question 5
5 Match the following organic molecules to their biochemical building blocks/precursors.

Using the pull-down menus, match each item in the left column to the corresponding item in the right column.
A nucleotides
B amino acids
C monosaccharides
D glycerol and fatty acids
End of Question 5


Question 6
6 Which of the following is NOT one of the four basic elements that comprise approximately 96% of a human's body weight?
 
End of Question 6


Question 7
7 The atomic number of an atom is equal to the number of protons in its nucleus.
   
 
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Question 8
8 Which of the following is true of an isotope?
 
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Question 9
9 If the pH or temperature of the environment that contains a protein is altered dramatically, then the protein may __________.
 
End of Question 9


Question 10
10 Which of the following is true of atoms?
 
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Question 11
11 Electrons bear a positive charge equal in strength to the negative charge of the proton.
   
 
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Question 12
12 Which of the following does NOT represent an accurate hierarchy in the natural combination of matter?
 
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Question 13
13 Buffers __________.
 
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Question 14
14 In biochemistry, and thus in the body, the universal solvent is __________.
 
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Question 15
15 Emulsions are heterogeneous mixtures.
   
 
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Question 16
16 In an ionic bond, __________.
 
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Question 17
17 Polar molecules are electrically balanced, due to the equal sharing of electrons between the atoms of the molecules.
   
 
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Question 18
18 Which of the following types of chemical reactions always involves atoms or molecules combining to form a larger, more complex molecule?
 
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Question 19
19 Which of the following is NOT a way to distinguish an acid from a base?
 
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Question 20
20 Enzymes are unchanged in a reaction; they can be reused, and are not needed in large quantities.
   
 
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Question 21
21 The major function of RNA is to carry out the genetic instructions for protein synthesis.
   
 
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Question 22
22 Which of the following is NOT true of DNA?
 
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Question 23
23 Which of the following is the primary energy-transferring molecule in cells?
 
End of Question 23


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