Nutrition and Health Exam 2 Study Deck
ACTUAL QUESTIONS AND CORRECT
ANSWERS
What chemical structure is located at the alpha-end of a fatty acid?
A. Carboxylic acid
B. Methyl group
C. A string of carbons
D. A string of hydrogens - Correct answers✔✔A. Carboxylic Acid
What chemical structure is located at the omega-end of a fatty acid?
A. Carboxylic acid
B. Methyl group
C. A string of carbons
D. A string of hydrogens - Correct answers✔✔B. Methyl Group
Long-chain fatty acids have how many carbons in their carbon chains?
A. Less than 8
B. 8-12
C. More than 12
D. None - Correct answers✔✔C. More than 12
As the length of the carbon chain in fatty acids increases...
A. The melting point of the fatty acids increases
B. The solubility of the fatty acids in water decreases
,C. The number of double bonds increases (i.e. they get more unsaturated)
D. All of the above
E. A and B, but not C - Correct answers✔✔E. A and B, but not C
Saturated fats are typically...
A. Liquid at room temperature (like an oil)
B. Solid at room temperature (like butter)
C. Should never be used for cooking
D. Should never be eaten - Correct answers✔✔B. solid at room temperature (like butter)
Which describes an unsaturated trans fatty acid?
A. There are no carbon to carbon double bonds
B. There is no carboxyl group at the alpha-end of the fatty acid
C. The hydrogens attached to the carbons in a double bond are on the same side of the fatty acid
molecule
D. The hydrogens attached to the carbons in a double bond are on opposite sides of the fatty acid
molecule - Correct answers✔✔D. The hydrogens attached to the carbons in a double bond are on
opposite sides of the fatty acid molecule
Here is the alpha designation of a fatty acid: cis9-18:1. Which of the following is correct about
this fatty acid:
A. It has 18 carbons in it carbon chain
B. It has one carbon to carbon double bond
C. The carbon to carbon double bond is located at the 9th carbon counting from the alpha-end of
the fatty acid
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
,Among these fats and oils, the best source of monounsaturated fatty acids is...
A. Canola oil
B. Olive oil
C. Margarine
D. Butter - Correct answers✔✔B. Olive Oil
What is true about linoleic acid and linolenic acid?
A. Both are essential, polyunsaturated fatty acids
B. Linoleic acid is an omega-6 fatty acid and linolenic acid is an omega-3 fatty acid
C. Both are metabolized to form eicosanoids
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
Which are true statements about cell membranes?
A. Their structures consist of a bilayer of phospholipids
B. The middle of the membrane is hydrophobic, while the outsides of the membrane are
hydrophilic
C. Many proteins, such as transporters and receptors, reside and function in membranes
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
What is the difference between cholesterol and a cholesteryl ester?
A. Cholesteryl ester is bound to a fatty acid, while cholesterol is not
B. Cholesterol is bound to a fatty acid, while cholesteryl ester is not
, C. Cholesterol is a sterol while cholesterol ester is not a sterol
D. None of the above are correct - Correct answers✔✔A. Cholesteryl ester is bound to a fatty
acid, while cholesterol is not
Which of the following are involved in triglyceride digestion?
A. Lingual lipase
B. Gastric lipase
C. Pancreatic lipase
D. All of the above
E. A and B, but not C - Correct answers✔✔A. All of the above
In digestion, emulsification of triglycerides, diglycerides, and fatty acids in the small intestine is
caused by what?
A. Phospholipids and bile salts in the bile
B. Lipase enzymes
C. Gastric emptying
D. Peristalsis - Correct answers✔✔A. Phospholipids and bile salts in the bile
Partial hydrogenation of oils is responsible for creating most of these in our diet...
A. Saturated fatty acids.
B. Polyunsaturated fatty acids.
C. Trans fats.
D. Monounsaturated fatty acids. - Correct answers✔✔C. trans fats
Specialized enzymes are necessary to digest lipids for absorption, with phospholipids being
digested by...
ACTUAL QUESTIONS AND CORRECT
ANSWERS
What chemical structure is located at the alpha-end of a fatty acid?
A. Carboxylic acid
B. Methyl group
C. A string of carbons
D. A string of hydrogens - Correct answers✔✔A. Carboxylic Acid
What chemical structure is located at the omega-end of a fatty acid?
A. Carboxylic acid
B. Methyl group
C. A string of carbons
D. A string of hydrogens - Correct answers✔✔B. Methyl Group
Long-chain fatty acids have how many carbons in their carbon chains?
A. Less than 8
B. 8-12
C. More than 12
D. None - Correct answers✔✔C. More than 12
As the length of the carbon chain in fatty acids increases...
A. The melting point of the fatty acids increases
B. The solubility of the fatty acids in water decreases
,C. The number of double bonds increases (i.e. they get more unsaturated)
D. All of the above
E. A and B, but not C - Correct answers✔✔E. A and B, but not C
Saturated fats are typically...
A. Liquid at room temperature (like an oil)
B. Solid at room temperature (like butter)
C. Should never be used for cooking
D. Should never be eaten - Correct answers✔✔B. solid at room temperature (like butter)
Which describes an unsaturated trans fatty acid?
A. There are no carbon to carbon double bonds
B. There is no carboxyl group at the alpha-end of the fatty acid
C. The hydrogens attached to the carbons in a double bond are on the same side of the fatty acid
molecule
D. The hydrogens attached to the carbons in a double bond are on opposite sides of the fatty acid
molecule - Correct answers✔✔D. The hydrogens attached to the carbons in a double bond are on
opposite sides of the fatty acid molecule
Here is the alpha designation of a fatty acid: cis9-18:1. Which of the following is correct about
this fatty acid:
A. It has 18 carbons in it carbon chain
B. It has one carbon to carbon double bond
C. The carbon to carbon double bond is located at the 9th carbon counting from the alpha-end of
the fatty acid
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
,Among these fats and oils, the best source of monounsaturated fatty acids is...
A. Canola oil
B. Olive oil
C. Margarine
D. Butter - Correct answers✔✔B. Olive Oil
What is true about linoleic acid and linolenic acid?
A. Both are essential, polyunsaturated fatty acids
B. Linoleic acid is an omega-6 fatty acid and linolenic acid is an omega-3 fatty acid
C. Both are metabolized to form eicosanoids
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
Which are true statements about cell membranes?
A. Their structures consist of a bilayer of phospholipids
B. The middle of the membrane is hydrophobic, while the outsides of the membrane are
hydrophilic
C. Many proteins, such as transporters and receptors, reside and function in membranes
D. All of the above
E. A and B, but not C - Correct answers✔✔D. All of the above
What is the difference between cholesterol and a cholesteryl ester?
A. Cholesteryl ester is bound to a fatty acid, while cholesterol is not
B. Cholesterol is bound to a fatty acid, while cholesteryl ester is not
, C. Cholesterol is a sterol while cholesterol ester is not a sterol
D. None of the above are correct - Correct answers✔✔A. Cholesteryl ester is bound to a fatty
acid, while cholesterol is not
Which of the following are involved in triglyceride digestion?
A. Lingual lipase
B. Gastric lipase
C. Pancreatic lipase
D. All of the above
E. A and B, but not C - Correct answers✔✔A. All of the above
In digestion, emulsification of triglycerides, diglycerides, and fatty acids in the small intestine is
caused by what?
A. Phospholipids and bile salts in the bile
B. Lipase enzymes
C. Gastric emptying
D. Peristalsis - Correct answers✔✔A. Phospholipids and bile salts in the bile
Partial hydrogenation of oils is responsible for creating most of these in our diet...
A. Saturated fatty acids.
B. Polyunsaturated fatty acids.
C. Trans fats.
D. Monounsaturated fatty acids. - Correct answers✔✔C. trans fats
Specialized enzymes are necessary to digest lipids for absorption, with phospholipids being
digested by...
