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Study Quiz 2

1
Malnutrition is
A)a diet lacking in the proper nutrients, even though sufficient Calories are consumed.
B)a lack of a sufficient number of Calories daily, no matter what the nutrient content.
C)the lack of information about nutrition, particularly among the poor in the U.S. and in developing countries.
D)a diet in which macronutrients are adequate but micronutrients are missing.
2
The major role of fat in our diets is to
A)add fiber.
B)create structural material.
C)provide energy.
D)synthesize hemoglobin.
3
A triglyceride is an ester of
A)three fatty acids and a glycerol molecule.
B)a fatty acid and three glycerol molecules.
C)three fatty acids.
D)three glycerol molecules.
4
Trans fatty acids in vegetable oil have been shown to raise cholesterol levels just as much as saturated fats. An explanation for these experimental results is that the trans fatty acids
A)undergo a reaction with hydrogen in the body and therefore acting as saturated compounds.
B)are similar in structure to saturated fats and therefore mimic the behavior of the saturated fats.
C)being polymerized into amino acids, which cause accumulation of cholesterol in the blood stream.
D)being oxidized by the presence of natural catalysts, causing them to behave as saturated compounds.

that serves as part of cell membrane structures.
5
Which statement is correct?

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A)This structure shows sucrose, the common disaccharide in table sugar.
B)This structure shows the cyclic form of a carbohydrate formed with peptide bonds.
C)This structure shows β-fructose, a common monosaccharide.
D)This structure shows the complex carbohydrate cellulose, which we are unable to digest.
6
Which statement is correct about starch and cellulose?
A)Starch is a polymer of glucose, but cellulose is not.
B)Starch and cellulose have identical structures, but different properties.
C)Starch and cellulose are both made from glucose, but have different linkages.
D)Starch and cellulose are both easily digested by the body.
7
This figure represents

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A)starch and shows the alpha linkage between rings.
B)starch and shows the beta linkage between rings.
C)cellulose and shows the alpha linkage between rings.
D)cellulose, and shows the beta linkages between rings.
8
Which statements about carbohydrates are true?

    I      They are the cause of obesity.
    II     They are used by the body to produce energy.
    III    They can be produced in plants by photosynthesis.
    IV    They are made up of C, H, and O in a 1:2:1 ratio.

A)II, III, IV only
B)III and IV only
C)I and II only
D)II only
9
This structure represents

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A)an amino acid.
B)a protein.
C)a carbohydrate.
D)a fatty acid.
10
Which element is a micromineral necessary for human life?

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A)element #1
B)element #2
C)element #3
D)element #4
11
If you see this symbol on a packaged food product, it tells you that the food

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A)is USDA certified as 100% organic.
B)has been fertilized with urea containing a slow-release enzyme.
C)has no genetically modified ingredients.
D)has been treated with radiation to preserve quality.
12
How many Calories of food energy can you derive from eating a 40-g piece of whole wheat bread? (Assume the bread is 51% carbohydrate, 9% protein, and 3% fat and that the rest is mainly water.)
A)107 Cal
B)120 Cal
C)160 Cal
D)267 Cal
13
Some vitamins can be stored by the body and are toxic in large amounts. Based on its chemical structure, what can you say about the safety of taking large quantities of the this vitamin?

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A)It will play a role in metabolizing minerals in the body, making an overdose likely.
B)It is expected to be very soluble in fats, making an overdose possible.
C)It will be a major source of energy for the body, making an overdose impossible.
D)It is expected to be very soluble in aqueous solution, making an overdose unlikely.
14
This is a schematic of the 1991 food pyramid. What foods are found in sections B and C of the pyramid?

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A)section B = fruits; section C = milk, yogurt, and cheese
B)section B = meat, fish, and nuts; section C = bread, cereal, and pasta
C)section B = bread, cereal, and pasta; section C = fats, oils, and sweets
D)section B = vegetables; section C = fruits
15
How many chiral carbons does this molecule (aspartic acid) have?

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A)1
B)2
C)3
D)4
16
Which statement correctly compares the food energy from different macronutrient food energy sources?
A)Carbohydrates contain more food energy per gram than either fats or proteins.
B)Fats contain more food energy per gram than either carbohydrates or proteins.
C)Proteins contain more food energy per gram than either fats or carbohydrates.
D)Carbohydrates, fats, and protein contain the same food energy per gram.
17
What is the significance of the elements shaded on this periodic table?

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A)They are all essential trace elements found in the human body.
B)They are all essential macrominerals necessary for human life.
C)They are the major elements found in the human body.
D)They are all essential microminerals necessary for human life.
18
Which equation represents the overall process of human metabolism?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232429/ch11_image21.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>

B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232429/ch11_image22.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>

C)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232429/ch11_image23.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>

D)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232429/ch11_image24.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>

19
Which is correct for these two snack bars?

Bar 1: A Quaker Cranberry Raisin & Almond Granola Bar has 150 Cal, 4.5 g total fat, 3 g protein, and 24 g carbohydrates.
Bar 2: A Luna Glow Strawberry Caramel Sundae Snack Bar has 140 Calories, 7 g total fat, 8 g protein, and 15 g carbohydrates.

A)The percentages of Calories from fat, protein, and carbohydrates are all higher for Bar 1.
B)The percentages of Calories from fat, protein, and carbohydrates are all higher for Bar 2.
C)The percentages of Calories from both carbohydrates and protein are higher for Bar 2.
D)The percentage of Calories from fat is higher for Bar 2, but the percentage of Calories from carbohydrates is higher for Bar 1.
20
What is the official slogan associated with the Food Pyramid issued in April, 2005?

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A)Steps to a Healthier You
B)Walk off Unhealthy Calories
C)Eat Multicolored Foods and Exercise
D)Move To The Top of the Food Pyramid







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