Question 1

All lipids are

Accepted Answer

A)   triglycerides.
B)   polar.
C)   hydrophilic.
D)   polymers of fatty acids.
E)   more soluble in nonpolar solvents than in water.F) All of the above
G) A) and B)

Question 2

The tertiary structure of a protein is determined by its

Accepted Answer

A)   interactions among R groups.
B)   right-handed coil.
C)   hydrogen bonding.
D)   branching.
E)   glycosidic linkages.F) A) and D)
G) A) and B)

Question 3

Suppose that you have isolated a protein with the following amino acid sequence: RSCFLA. Refer to the diagrams in Table 3.1 of the textbook, and draw this protein. In your drawing, label the N terminus and the C terminus and show all peptide linkages. How many water molecules are generated in the synthesis of this protein?

Accepted Answer

The answer of Suppose that you have isolated a protein...

Question 4

Consider the following triglycerides (A and B)  a. In B, circle the remnant of the glycerol portion of the triglyceride.
b. Which triglyceride (A or B) is probably a solid at room temperature? Explain your answer.
c. Which triglyceride (A or B) is probably derived from a plant? Explain your answer.
d. How many water molecules result from the formation of triglyceride B from glycerol and three fatty acids?

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> b. Triglyceride A is probably solid at ...

Question 5

You look at the label on a container of shortening and see the words "hydrogenated vegetable oil." This means that during processing, the number of carbon-carbon double bonds in the oil was decreased. What is the result of decreasing the number of double bonds?

Accepted Answer

A)   The oil now has a lower melting point.
B)   The oil is now solid at room temperature.
C)   There are more "kinks" in the fatty acid chains.
D)   The oil is now a derivative carbohydrate.
E)   The fatty acid is now a triglyceride.F) All of the above
G) None of the above

Question 6

Which of the following statement about isomers is true?

Accepted Answer

A)   They all have different chemical formulas but the same arrangement.
B)   They are found only in proteins.
C)   They can only be structural.
D)   They all have the same chemical formula but different arrangements.
E)   None of the aboveF) A) and C)
G) A) and E)

Question 7

Which of the following is not a carbohydrate?

Accepted Answer

A)   Glucose
B)   Starch
C)   Cellulose
D)   Hemoglobin
E)   DeoxyriboseF) All of the above
G) None of the above

Question 8

Which of the following statements about lipids is false?

Accepted Answer

A)   Lipids are a major component of the phospholipid bilayer.
B)   Lipids provide waterproofing for the surfaces of organisms.
C)   Steroid hormones are lipids.
D)   A number of vitamins are lipids.
E)   All of the above statements are true.F) A) and C)
G) A) and D)

Question 9

The bonds that form between the atoms of polymeric macromolecules are _______ bonds.

Accepted Answer

A)   hydrogen
B)   peptide
C)   disulfide
D)   covalent
E)   ionicF) A) and C)
G) B) and E)

Question 10

A fat is most closely related to which of the molecules?

Accepted Answer

A)   A wax
B)   A phospholipid
C)   An oil
D)   Cholesterol
E)   A carotenoidF) B) and D)
G) None of the above

Question 11

Cholesterol is soluble in chloroform, an organic solvent, but it is not soluble in water. Based on this information, what class of biological macromolecules does cholesterol belong to?

Accepted Answer

A)   Oligosaccharides
B)   Carbohydrates
C)   Proteins
D)   Enzymes
E)   LipidsF) A) and E)
G) All of the above E

Question 12

All carbohydrates

Accepted Answer

A)   are polymers.
B)   are simple sugars.
C)   consist of one or more simple sugars.
D)   are found in biological membranes.
E)   are more soluble in nonpolar solvents than in water.F) B) and C)
G) C) and D) C

Question 13

Chitin is a polymer of

Accepted Answer

A)   galactosamine.
B)   glucose.
C)   glucosamine.
D)   glycine.
E)   All of the aboveF) D) and E)
G) B) and E)

Question 14

A molecule with the formula C16H30O15 is a

Accepted Answer

A)   hydrocarbon.
B)   carbohydrate.
C)   lipid.
D)   protein.
E)   nucleic acid.F) All of the above
G) C) and D)

Question 15

A  β\betaβ  pleated sheet organization in a polypeptide chain is an example of _______ structure.

Accepted Answer

A)   primary
B)   secondary
C)   tertiary
D)   quaternary
E)   coiled F) A) and B)
G) B) and D)

Question 16

Which of the following biological molecules is/are linked by covalent bonds formed by the removal of the elements of water from the reactants (a kind of condensation reaction) ?

Accepted Answer

A)   Oils
B)   Waxes
C)   Proteins
D)   Starch
E)   All of the aboveF) C) and D)
G) B) and E)

Question 17

Which of the following protein structures is destroyed by denaturation?

Accepted Answer

A)   Primary
B)   Secondary
C)   Tertiary
D)   Both b and c
E)   All of the aboveF) All of the above
G) A) and E)

Question 18

Complex carbohydrates should be a mainstay of one's diet. What properties of carbohydrates make them excellent food sources?

Accepted Answer

Complex carbohydrates are easily broken down into glucose monomers, which provide nearly all cellular energy. By storing glucose monomers in large carbohydrates, the osmotic strain on any given cell is reduced without sacrificing availability of energy.

Question 19

Glucosamine and galactosamine are monosaccharides in which a hydroxyl group has been replaced by a(n) _______ group.

Accepted Answer

The answer of Glucosamine and galactosamine are monosaccharides in which...

Question 20

Starch and glycogen, which are both polysaccharides, differ structurally in that glycogen _______, whereas starch _______.

Accepted Answer

A)   is highly branched; is moderately branched
B)   consists of parallel strands; is highly branched
C)   consists of a combination of branching and parallel strands; is moderately branched
D)   is moderately branched; consists of parallel strands
E)   is highly branched; consists of parallel strandsF) A) and D)
G) All of the above

Exam 3: Proteins, Carbohydrates, and Lipids

All lipids are

Correct Answer
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The tertiary structure of a protein is determined by its

Correct Answer
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b. Triglyceride A is probably solid at ...
View Answer

You look at the label on a container of shortening and see the words "hydrogenated vegetable oil." This means that during processing, the number of carbon-carbon double bonds in the oil was decreased. What is the result of decreasing the number of double bonds?

Correct Answer
verified

Which of the following statement about isomers is true?

Correct Answer
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Which of the following is not a carbohydrate?

Correct Answer
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Which of the following statements about lipids is false?

Correct Answer
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The bonds that form between the atoms of polymeric macromolecules are _______ bonds.

Correct Answer
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A fat is most closely related to which of the molecules?

Correct Answer
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Cholesterol is soluble in chloroform, an organic solvent, but it is not soluble in water. Based on this information, what class of biological macromolecules does cholesterol belong to?

Correct Answer
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E

All carbohydrates

Correct Answer
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C

Chitin is a polymer of

Correct Answer
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A molecule with the formula C₁₆H₃₀O₁₅ is a

Correct Answer
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A $\beta$ pleated sheet organization in a polypeptide chain is an example of _______ structure.

Correct Answer
verified

Which of the following biological molecules is/are linked by covalent bonds formed by the removal of the elements of water from the reactants (a kind of condensation reaction) ?

Correct Answer
verified

Which of the following protein structures is destroyed by denaturation?

Correct Answer
verified

Complex carbohydrates should be a mainstay of one's diet. What properties of carbohydrates make them excellent food sources?

Correct Answer
verified
Complex carbohydrates are easily broken down into glucose monomers, which provide nearly all cellular energy. By storing glucose monomers in large carbohydrates, the osmotic strain on any given cell is reduced without sacrificing availability of energy.

Glucosamine and galactosamine are monosaccharides in which a hydroxyl group has been replaced by a(n) _______ group.

Correct Answer
verified

Starch and glycogen, which are both polysaccharides, differ structurally in that glycogen _, whereas starch _.

Correct Answer
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Exam 3: Proteins, Carbohydrates, and Lipids

All lipids are

Correct AnswerverifiedShow Answer

The tertiary structure of a protein is determined by its

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answerverified b. Triglyceride A is probably solid at ...View AnswerShow Answer

You look at the label on a container of shortening and see the words "hydrogenated vegetable oil." This means that during processing, the number of carbon-carbon double bonds in the oil was decreased. What is the result of decreasing the number of double bonds?

Correct AnswerverifiedShow Answer

Which of the following statement about isomers is true?

Correct AnswerverifiedShow Answer

Which of the following is not a carbohydrate?

Correct AnswerverifiedShow Answer

Which of the following statements about lipids is false?

Correct AnswerverifiedShow Answer

The bonds that form between the atoms of polymeric macromolecules are _______ bonds.

Correct AnswerverifiedShow Answer

A fat is most closely related to which of the molecules?

Correct AnswerverifiedShow Answer

Cholesterol is soluble in chloroform, an organic solvent, but it is not soluble in water. Based on this information, what class of biological macromolecules does cholesterol belong to?

Correct AnswerverifiedE

All carbohydrates

Correct AnswerverifiedC

Chitin is a polymer of

Correct AnswerverifiedShow Answer

A molecule with the formula C16H30O15 is a

Correct AnswerverifiedShow Answer

A β\betaβ pleated sheet organization in a polypeptide chain is an example of _______ structure.

Correct AnswerverifiedShow Answer

Which of the following biological molecules is/are linked by covalent bonds formed by the removal of the elements of water from the reactants (a kind of condensation reaction) ?

Correct AnswerverifiedShow Answer

Which of the following protein structures is destroyed by denaturation?

Correct AnswerverifiedShow Answer

Complex carbohydrates should be a mainstay of one's diet. What properties of carbohydrates make them excellent food sources?

Correct AnswerverifiedComplex carbohydrates are easily broken down into glucose monomers, which provide nearly all cellular energy. By storing glucose monomers in large carbohydrates, the osmotic strain on any given cell is reduced without sacrificing availability of energy.

Glucosamine and galactosamine are monosaccharides in which a hydroxyl group has been replaced by a(n) _______ group.

Correct AnswerverifiedShow Answer

Starch and glycogen, which are both polysaccharides, differ structurally in that glycogen _______, whereas starch _______.

Correct AnswerverifiedShow Answer

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b. Triglyceride A is probably solid at ...
View Answer

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E

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C

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A molecule with the formula C₁₆H₃₀O₁₅ is a

Correct Answer
verified

A $\beta$ pleated sheet organization in a polypeptide chain is an example of _______ structure.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Complex carbohydrates are easily broken down into glucose monomers, which provide nearly all cellular energy. By storing glucose monomers in large carbohydrates, the osmotic strain on any given cell is reduced without sacrificing availability of energy.

Correct Answer
verified

Starch and glycogen, which are both polysaccharides, differ structurally in that glycogen _, whereas starch _.

Correct Answer
verified