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This activity contains 60 questions.

Question 1
1
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Select the hydrocarbon from the following choices.
 
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Question 2
2
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Which is an organic molecule?
 
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Question 3
3
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Which element is closely associated with the field of organic chemistry?
 
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Question 4
4
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Carbon atoms are the most versatile molecular building blocks used by living organisms because _____.
 
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Question 5
5
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Citric acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule such as citric acid to be acidic?
 
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Question 6
6
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Which of these is found in amines?
 
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Question 7
7
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Choose the pair of terms that completes this sentence: Hydroxyl is to _____ as _____ is to amine.
 
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Question 8
8
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Although the structures of the functional groups important to life vary in chemical structure, they share one thing in common: They _____.
 
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Question 9
9
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Ethanol, propanol, and methanol are three simple alcohols. They can be grouped together because they _____.
 
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Question 10
10
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The ionized or dissociated carboxyl group may be written as _____.
 
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Question 11
11
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Choose the pair of terms that completes this sentence about functional groups in organic chemistry: Carboxyl is to _____ as _____ is to base.
 
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Question 12
12
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What is the process by which cells link monomers together to form polymers?
 
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Question 13
13
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In a hydrolysis reaction, _____. In this process, water is _____.
 
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Question 14
14
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Besides water, most of the mass of a typical cell is present in the form of one of these four categories of macromolecules: _____.
 
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Question 15
15
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Lactose is a disaccharide (two monosaccharides joined together). To metabolize lactose, individuals require an enzyme known as lactase. What is true about this reaction?
 
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Question 16
16
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Which of the following molecules is a carbohydrate?
 
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Question 17
17
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Carbohydrates are mainly used in our bodies _____.
 
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Question 18
18
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Consider the figure shown below. What one characteristic is shared by sucrose and maltose?

Quiz Image
 
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Question 19
19
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Which of the following is a function of carbohydrates (as a class)?
 
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Question 20
20
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When two monosaccharides link to form a disaccharide, the by-product is _____.
 
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Question 21
21
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The most common disaccharide is _____.
 
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Question 22
22
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In the process of converting cornstarch into high fructose corn syrup, one of the first products is _____. Then, enzymes are used to convert some of this product to fructose.
 
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Question 23
23
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Cellulose is a _____ made of many _____.
 
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Question 24
24
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Generally, animals cannot digest the linkages between the glucose molecules in cellulose. How then do cows get enough nutrients from eating grass?
 
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Question 25
25
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In what polysaccharide form do plants store sugar to be available later for energy?
 
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Question 26
26
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The complex carbohydrate that you are most likely to have eaten recently is _____.
 
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Question 27
27
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A polysaccharide that we use for storing energy in our muscles and livers is _____.
 
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Question 28
28
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Which of the following components of a tossed salad will pass through the human digestive tract with the least digestion?
 
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Question 29
29
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A glucose molecule is to starch as _____.
 
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Question 30
30
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Lipids differ from other large biological molecules in that they _____.
 
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Question 31
31
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Which is the correct term for compounds that do not mix with water?
 
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Question 32
32
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Nutritionally, saturated triglycerides are considered to be less healthy than unsaturated triglycerides. Consider the differences between the two molecules shown below. What is one major difference between them?

Quiz Image Quiz Image
 
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Question 33
33
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A fatty acid containing at least two double bonds is called _____.
 
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Question 34
34
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Manufacturers make vegetable oils solid or semisolid by _____.
 
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Question 35
35
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Hydrogenated vegetable oils are more like animal fats than other plant oils. Because they _____ than other plant oils, they can contribute to cardiovascular disease.
 
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Question 36
36
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The lipids that form the main structural component of cell membranes are _____.
 
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Question 37
37
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Cholesterol belongs to which class of molecules?
 
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Question 38
38
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Some athletes use anabolic steroids to build their body mass. Why is this considered a problematic practice, especially in adolescents?
 
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Question 39
39
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Tetrahydrogestrinone (THG) is an anabolic steroid. How does it differ from more traditional anabolic steroids that have been used in the past by athletes?
 
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Question 40
40
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The ovalbumin in egg white can be classified as which type of protein?
 
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Question 41
41
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How many different kinds of amino acids are there in most proteins?
 
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Question 42
42
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Protein molecules are polymers of _____.
 
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Question 43
43
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Which of these is found in amino acids?
 
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Question 44
44
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The peptide bond is _____.
 
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Question 45
45
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To what does the term polypeptide specifically refer?
 
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Question 46
46
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Which of the following would be affected when a protein is denatured?
 
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Question 47
47
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Two proteins have the same number and type of amino acids. How is it that they can have different shapes and therefore different functions?
 
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Question 48
48
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The formation of a peptide bond is shown below. The bond forms through _____.

Quiz Image
 
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Question 49
49
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Enzyme molecules require a specific shape to perform their catalytic function. Which of the following might alter the protein shape?
 
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Question 50
50
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The "primary structure" of a protein refers to _____.
 
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Question 51
51
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The alpha helix and pleated sheet represent which level of protein structure?
 
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Question 52
52
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The overall three-dimensional shape of a single polypeptide is called the _____.
 
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Question 53
53
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How does a protein's quaternary structure differ from other levels of protein structure?
 
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Question 54
54
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Collagen is found in connective tissue, which is a structural component of bones, tendons, and ligament. Collagen has great strength because of its _____ structure.
 
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Question 55
55
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Which of the following do nucleic acids and proteins have in common?
 
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Question 56
56
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Based on the way the nitrogen-containing bases in DNA and RNA pair, you would expect the percentage of _____ to be equal to the percentage of _____. Look at the figure carefully.

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Question 57
57
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How does DNA differ from RNA?
 
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Question 58
58
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A nucleotide is made of which of the following chemical components? Look carefully at the figure below to determine the answer.

Quiz Image
 
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Question 59
59
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A shortage of phosphorus in the soil would make it especially difficult for a plant to manufacture _____.
 
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Question 60
60
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Lactose tolerance is an adaptation _____.
 
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