Question 1

Which of the following statements about the functional groups of organic compounds is false?

Accepted Answer

A)  Functional groups may help make organic compounds hydrophilic.
B)  Many biological molecules have two or more functional groups.
C)  Functional groups participate in chemical reactions.
D)  All functional groups include a carbon atom.

Question 2

A molecule with the formula C₅₅H₁₁₀O₅₅ is probably a(n)

Accepted Answer

A)  oil.
B)  steroid.
C)  protein.
D)  polysaccharide.

Question 3

How are genes used by cells to build proteins?

Accepted Answer

A)  The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein.
B)  The genes in RNA direct the synthesis of a DNA molecule, which is used to build a protein.
C)  DNA is transcribed into an amino acid sequence.
D)  The genes in RNA direct the synthesis of proteins directly.

Question 4

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Accepted Answer

A)  is liquid at room temperature.
B)  is hydrogenated.
C)  is modified to be solid at room temperature.
D)  has lard added to it.

Question 5

Foods that are high in fiber are most likely derived from

Accepted Answer

A)  plants.
B)  dairy products.
C)  red meats.
D)  fish.

Question 6

Peptide bonds

Accepted Answer

A)  are used to form amino acids.
B)  form between fatty acids.
C)  are formed by a hydrolysis reaction.
D)  link amino acids.

Question 7

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Accepted Answer

A)  one palmitic acid, one stearic acid, and one oleic acid
B)  three palmitic acids
C)  two palmitic acids and one stearic acid
D)  one stearic acid, one oleic acid, and one phosphate group

Question 8

Which of the following statements about animal cell lipids is false?

Accepted Answer

A)  Fats are a form of lipid that function to store energy.
B)  Phospholipids are important components of cell membranes.
C)  Many lipids function as enzymes.
D)  Cholesterol is a type of lipid that is a component of cell membranes and steroid hormones.

Question 9

Which of the following statements about enzymes is false?

Accepted Answer

A)  They increase the rate of chemical reactions.
B)  They function as chemical catalysts.
C)  They regulate virtually all chemical reactions in a cell.
D)  They are monomers used to build proteins.

Question 10

Sucrose is formed

Accepted Answer

A)  from two glucose molecules.
B)  from two monosaccharides through dehydration synthesis.
C)  when ionic bonds link two monosaccharides.
D)  when glucose and lactose are combined.

Question 11

Which of the following is an amino group?

Accepted Answer

A)  -OH
B)  -NH₂
C)  -COOH
D)  -CO

Question 12

In what part of the world did the mutation for lactose tolerance first appear?

Accepted Answer

A)  East Asia
B)  South America
C)  northern Europe
D)  North America

Question 13

Structural proteins

Accepted Answer

A)  include receptor molecules.
B)  include hemoglobin.
C)  are found in hair and tendons.
D)  include ovalbumin, a protein found in egg white.

Question 14

Mad cow disease serves as an example of how interdependent ________ and ________ are to protein.

Accepted Answer

A)  solubility; texture
B)  form; construction
C)  structure; function
D)  adaptability; development

Question 15

The results of dehydration synthesis can be reversed by

Accepted Answer

A)  condensation.
B)  hydrolysis.
C)  polymerization.
D)  the addition of an amino group.

Question 16

After reading the paragraph below, answer the questions that follow.
You're the manager of a factory that produces enzyme-washed blue jeans (the enzymes lighten the color of the denim, giving a "faded" appearance) . When the most recent batch of fabric came out of the enzyme wash, however, the color wasn't light enough to meet your standards. Your quality control laboratory wants to do some tests to determine why the wash enzymes didn't perform as expected.
-Based on your understanding of enzyme structure, which of the following would you recommend that they also investigate?

Accepted Answer

A)  the temperature of the liquid in the washing vat
B)  the manufacturer of the fabric
C)  how long the fabric has been in storage
D)  the primary structure of the enzyme

Question 17

After reading the paragraph below, answer the questions that follow.
You're the manager of a factory that produces enzyme-washed blue jeans (the enzymes lighten the color of the denim, giving a "faded" appearance) . When the most recent batch of fabric came out of the enzyme wash, however, the color wasn't light enough to meet your standards. Your quality control laboratory wants to do some tests to determine why the wash enzymes didn't perform as expected.
-Which hypothesis is most likely to be productive for their initial investigation?

Accepted Answer

A)  The nucleotide chain of the enzymes may be incorrectly formed.
B)  The dye in the fabric may have hydrolyzed the fatty acids in the enzymes.
C)  The three-dimensional structure of the proteins may have been altered.
D)  There may not have been enough phospholipids for the volume of fabric.

Question 18

High-fructose corn syrup is made from corn. The main carbohydrate in corn is a polysaccharide called

Accepted Answer

A)  fructose.
B)  starch.
C)  hydrocarbon.
D)  cellulose.

Question 19

Which of the following options correctly pairs a polymer and its monomer?

Accepted Answer

A)  cellulose, amino acids
B)  DNA, nucleotides
C)  collagen, nucleic acids
D)  RNA, ribose

Question 20

These two molecules are structural isomers. What is the difference between them?

Accepted Answer

A)  the number of carbon atoms
B)  the number of hydrogen atoms
C)  the location of a double-bonded oxygen atom
D)  Only one of them has a double bond between carbon atoms.

Exam 3: The Molecules of Cells

These two molecules are structural isomers. What is the difference between them?

Correct Answer
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Which of the following options correctly pairs a polymer and its monomer?

Correct Answer
verified

High-fructose corn syrup is made from corn. The main carbohydrate in corn is a polysaccharide called

Correct Answer
verified

A molecule with the formula C₅₅H₁₁₀O₅₅ is probably a(n)

Correct Answer
verified

Which of the following is an amino group?

Correct Answer
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Which of the following statements about the functional groups of organic compounds is false?

Correct Answer
verified

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Correct Answer
verified

Sucrose is formed

Correct Answer
verified

Peptide bonds

Correct Answer
verified

The results of dehydration synthesis can be reversed by

Correct Answer
verified

Correct Answer
verified

In what part of the world did the mutation for lactose tolerance first appear?

Correct Answer
verified

How are genes used by cells to build proteins?

Correct Answer
verified

Which of the following statements about enzymes is false?

Correct Answer
verified

Correct Answer
verified

Foods that are high in fiber are most likely derived from

Correct Answer
verified

Structural proteins

Correct Answer
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Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Correct Answer
verified

Which of the following statements about animal cell lipids is false?

Correct Answer
verified

Mad cow disease serves as an example of how interdependent and are to protein.

Correct Answer
verified

Exam 3: The Molecules of Cells

These two molecules are structural isomers. What is the difference between them?

Correct AnswerverifiedShow Answer

Which of the following options correctly pairs a polymer and its monomer?

Correct AnswerverifiedShow Answer

High-fructose corn syrup is made from corn. The main carbohydrate in corn is a polysaccharide called

Correct AnswerverifiedShow Answer

A molecule with the formula C₅₅H₁₁₀O₅₅ is probably a(n)

Correct AnswerverifiedShow Answer

Which of the following is an amino group?

Correct AnswerverifiedShow Answer

Which of the following statements about the functional groups of organic compounds is false?

Correct AnswerverifiedShow Answer

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Correct AnswerverifiedShow Answer

Sucrose is formed

Correct AnswerverifiedShow Answer

Peptide bonds

Correct AnswerverifiedShow Answer

The results of dehydration synthesis can be reversed by

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In what part of the world did the mutation for lactose tolerance first appear?

Correct AnswerverifiedShow Answer

How are genes used by cells to build proteins?

Correct AnswerverifiedShow Answer

Which of the following statements about enzymes is false?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Foods that are high in fiber are most likely derived from

Correct AnswerverifiedShow Answer

Structural proteins

Correct AnswerverifiedShow Answer

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Correct AnswerverifiedShow Answer

Which of the following statements about animal cell lipids is false?

Correct AnswerverifiedShow Answer

Mad cow disease serves as an example of how interdependent ________ and ________ are to protein.

Correct AnswerverifiedShow Answer

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Mad cow disease serves as an example of how interdependent and are to protein.

Correct Answer
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