Question 1

You have just sequenced a new protein found in mice and observe that sulphur-containing cysteine residues occur at regular intervals. What is the significance of this finding?

Accepted Answer

A)   Cysteine residues are required for the formation of α helices and β pleated sheets.
B)   It will be important to include cysteine in the diet of the mice.
C)   Cysteine residues are involved in disulphide bridges that help form tertiary structure.
D)   Cysteine causes bends, or angles, to occur in the tertiary structure of proteins.E) All of the above
F) A) and B)

Question 2

- A fat (or triacylglycerol)  would be formed as a result of a dehydration reaction between ________.

Accepted Answer

A)   one molecule of 9 and three molecules of 10
B)   three molecules of 9 and one molecule of 10
C)   one molecule of 5 and three molecules of 9
D)   one molecule of 5 and three molecules of 10E) A) and C)
F) None of the above

Question 3

Saturated fats ________.

Accepted Answer

A)   are more common in plants than in animals
B)   have multiple double bonds in the carbon chains of their fatty acids
C)   are generally liquid at room temperature
D)   contain more hydrogen than unsaturated fats that consist of the same number of carbon atomsE) A) and B)
F) A) and C)

Question 4

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

Accepted Answer

A)   C60H120O60
B)   C60H102O51
C)   C60H100O50
D)   C60H111O51E) B) and D)
F) B) and C)

Question 5

If one strand of a DNA molecule has the sequence of bases 5′-ATTGCA-3′, the mRNA synthesised following the template will be ________.

Accepted Answer

A)   5′-TAACGT-3′
B)   5′-TGCAAT-3′
C)   3′-UAACGU-5′
D)   5′-UGCAAU-3′E) B) and C)
F) B) and D)

Question 6

Which of the following is true of unsaturated fats?

Accepted Answer

A)   They are more common in animals than in plants.
B)   They have double bonds in their fatty acid chains.
C)   They generally solidify at room temperature.
D)   They contain more hydrogen than do saturated fats having the same number of carbon atoms.E) B) and C)
F) All of the above

Question 7

The label on a container of margarine lists "hydrogenated vegetable oil" as the major ingredient. Hydrogenated vegetable oil ________.

Accepted Answer

A)   is solid at room temperature
B)   has more "kinks" in the fatty acid chains
C)   has fewer trans fatty acids
D)   is less likely to clog arteriesE) None of the above
F) B) and C)

Question 8

Humans can digest starch but not cellulose because ________.

Accepted Answer

A)   humans have enzymes that can hydrolyse the α-glycosidic linkages of starch but not the β-glycosidic linkages of cellulose
B)   starch monomers are joined by covalent bonds, and cellulose monomers are joined by ionic bonds
C)   the monomer of starch is glucose, while the monomer of cellulose is galactose
D)   starch is softer than celluloseE) A) and C)
F) B) and D)

Question 9

Which of the following could be responsible for atherosclerosis and should be eliminated from diet for health reasons?

Accepted Answer

A)   butter
B)   olive oil
C)   liver and kidney organ meat
D)   butter, liver, and kidney organ meatE) B) and C)
F) All of the above

Question 10

You disrupt all hydrogen bonds in a protein. What level of structure will be preserved?

Accepted Answer

A)   primary structure
B)   secondary structure
C)   tertiary structure
D)   quaternary structureE) C) and D)
F) B) and C)

Exam 5: The Structure and Function of Large Biological Molecules

You have just sequenced a new protein found in mice and observe that sulphur-containing cysteine residues occur at regular intervals. What is the significance of this finding?

Correct Answer
verified

Which of the following could be responsible for atherosclerosis and should be eliminated from diet for health reasons?

Correct Answer
verified

Which of the following is true of unsaturated fats?

Correct Answer
verified

Saturated fats ________.

Correct Answer
verified

The label on a container of margarine lists "hydrogenated vegetable oil" as the major ingredient. Hydrogenated vegetable oil ________.

Correct Answer
verified

- A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between ________.

Correct Answer
verified

If one strand of a DNA molecule has the sequence of bases 5′-ATTGCA-3′, the mRNA synthesised following the template will be ________.

Correct Answer
verified

Humans can digest starch but not cellulose because ________.

Correct Answer
verified

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

Correct Answer
verified

You disrupt all hydrogen bonds in a protein. What level of structure will be preserved?

Correct Answer
verified

Exam 5: The Structure and Function of Large Biological Molecules

You have just sequenced a new protein found in mice and observe that sulphur-containing cysteine residues occur at regular intervals. What is the significance of this finding?

Correct AnswerverifiedShow Answer

Which of the following could be responsible for atherosclerosis and should be eliminated from diet for health reasons?

Correct AnswerverifiedShow Answer

Which of the following is true of unsaturated fats?

Correct AnswerverifiedShow Answer

Saturated fats ________.

Correct AnswerverifiedShow Answer

The label on a container of margarine lists "hydrogenated vegetable oil" as the major ingredient. Hydrogenated vegetable oil ________.

Correct AnswerverifiedShow Answer

- A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between ________.

Correct AnswerverifiedShow Answer

If one strand of a DNA molecule has the sequence of bases 5′-ATTGCA-3′, the mRNA synthesised following the template will be ________.

Correct AnswerverifiedShow Answer

Humans can digest starch but not cellulose because ________.

Correct AnswerverifiedShow Answer

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

Correct AnswerverifiedShow Answer

You disrupt all hydrogen bonds in a protein. What level of structure will be preserved?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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