Question 1

DNA nucleotides include ______.

Accepted Answer

A)   uracil, guanine, adenine, and cytosine
B)   thymine, guanine, adenine, and cytosine
C)   thymine, uracil, adenine, and cytosine
D)   thymine, guanine, adenine, and uracilE) A) and B)
F) B) and C)

Question 2

People with lactose intolerance do not have enough ______.

Accepted Answer

A)   lactose
B)   lactase
C)   glucose
D)   fructoseE) C) and D)
F) A) and C)

Question 3

Nucleic acids are polymers of ______ monomers.

Accepted Answer

A)   monosaccharide
B)   fatty acid
C)   DNA
D)   nucleotideE) A) and C)
F) None of the above

Question 4

The figure below shows ______.

Accepted Answer

A)   a single strand of RNA
B)   double-stranded RNA
C)   a single strand of DNA
D)   double-stranded DNAE) A) and B)
F) None of the above

Question 5

A single carbon atom can form a maximum of ______ covalent bond(s) .

Accepted Answer

A)   none; carbon only participates in ionic bonds
B)   1
C)   2
D)   4E) B) and C)
F) A) and B)

Question 6

What name is given to the following reaction?
glycerol + 3 fatty acids → triglyceride + 3 water molecules

Accepted Answer

A)   denaturation
B)   hydrolysis
C)   hydrogenation
D)   dehydration reactionE) A) and D)
F) A) and C)

Question 7

The ability to tolerate lactose throughout life is most likely to be seen in ______.

Accepted Answer

A)   populations that live in cold climates
B)   populations that live in wet climates
C)   cultures that keep dairy herds
D)   Native AmericansE) C) and D)
F) B) and C)

Question 8

A protein's function is dependent on its ______.

Accepted Answer

A)   pH
B)   shape
C)   size
D)   weightE) None of the above
F) C) and D)

Question 9

In the following equation,lactose is a ______. galactose + glucose → lactose + water

Accepted Answer

A)   nucleic acid
B)   fatty acid
C)   disaccharide
D)   dipeptideE) A) and B)
F) B) and C)

Question 10

The following molecule is best described as a ______. CH3-CH2-CH2-CH2

Accepted Answer

A)   protein
B)   carbohydrate
C)   hydrocarbon
D)   lipidE) B) and D)
F) A) and D)

Question 11

______ is a steroid.

Accepted Answer

A)   Butter
B)   Sucrose
C)   Amino acid
D)   EstrogenE) All of the above
F) B) and D)

Question 12

A glycerol with three fatty acids attached is referred to as a ______.

Accepted Answer

A)   prostaglandin
B)   nucleic acid
C)   steroid
D)   fatE) B) and C)
F) None of the above

Question 13

The figure below shows ______.

Accepted Answer

A)   DNA
B)   RNA
C)   protein secondary structure
D)   hydrolysisE) All of the above
F) A) and B)

Question 14

Which of the following is an example of a polysaccharide?

Accepted Answer

A)   glucose
B)   starch
C)   maltose
D)   sucroseE) C) and D)
F) B) and D)

Question 15

What is the name given to the reaction that breaks peptide bonds?

Accepted Answer

A)   dehydration reaction
B)   hydrogenation
C)   hydrolysis
D)   denaturationE) A) and C)
F) A) and B)

Question 16

How does RNA differ from DNA?

Accepted Answer

A)   RNA is double-stranded; DNA is single-stranded.
B)   RNA is a polymer of amino acids; DNA is a polymer of nucleotides.
C)   RNA contains uracil; DNA contains thymine.
D)   In RNA G pairs with T; in DNA G pairs with C.E) B) and D)
F) B) and C)

Question 17

A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ______.

Accepted Answer

A)   gene
B)   protein
C)   nucleic acid
D)   enzymeE) A) and B)
F) A) and C)

Question 18

Which of the following are isomers?

Accepted Answer

A)   glucose and fructose
B)   glucose and sucrose
C)   sucrose and glucose
D)   lactose and maltoseE) C) and D)
F) None of the above

Question 19

Amino acids include a side group as well as ______.

Accepted Answer

A)   a central carbon, a hydrogen atom, an amino group, and a carboxyl group
B)   a central carbon, a hydrogen atom, a hydroxyl group, and a carbonyl group
C)   a central hydrogen, a nitrogen atom, a hydroxyl group, and a carbonyl group
D)   a central nitrogen, a carbon atom, an amino group, and a carbonyl groupE) A) and D)
F) All of the above

Question 20

Animals store carbohydrates as ______.

Accepted Answer

A)   cellulose
B)   glycogen
C)   starch
D)   maltoseE) A) and D)
F) None of the above

Exam 3: The Molecules of Life

Which of the following is an example of a polysaccharide?

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What is the name given to the reaction that breaks peptide bonds?

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A single carbon atom can form a maximum of ______ covalent bond(s) .

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Nucleic acids are polymers of ______ monomers.

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The following molecule is best described as a ______. CH3-CH2-CH2-CH2

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Animals store carbohydrates as ______.

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The figure below shows ______.

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______ is a steroid.

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A glycerol with three fatty acids attached is referred to as a ______.

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How does RNA differ from DNA?

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A protein's function is dependent on its ______.

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In the following equation,lactose is a ______. galactose + glucose → lactose + water

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DNA nucleotides include ______.

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A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ______.

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The ability to tolerate lactose throughout life is most likely to be seen in ______.

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People with lactose intolerance do not have enough ______.

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Which of the following are isomers?

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Amino acids include a side group as well as ______.

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What name is given to the following reaction? glycerol + 3 fatty acids → triglyceride + 3 water molecules

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The figure below shows ______.

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The following molecule is best described as a ______. CH₃-CH₂-CH₂-CH₂

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