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Chapter Practice Test

This activity contains 23 questions.

Question 1
1 Which of the following is a property of matter?
End of Question 1

Question 2
2 Which of the following best defines potential energy?
End of Question 2

Question 3
3 Something with a pH of 5 would __________.
End of Question 3

Question 4
4 All organic molecules contain carbon.
End of Question 4

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.
End of Question 7

Question 8
8 Which of the following is true of an isotope?
End of Question 8

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?
End of Question 10

Question 11
11 Electrons bear a positive charge equal in strength to the negative charge of the proton.
End of Question 11

Question 12
12 Which of the following does NOT represent an accurate hierarchy in the natural combination of matter?
End of Question 12

Question 13
13 Buffers __________.
End of Question 13

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.
End of Question 15

Question 16
16 In an ionic bond, __________.
End of Question 16

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.
End of Question 21

Question 22
22 Which of the following is NOT true of DNA?
End of Question 22

Question 23
23 Which of the following is the primary energy-transferring molecule in cells?
End of Question 23

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