NUTRITION AND HEALTH EXAM 2
QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
What are the four key players of Lipids? - ANS Fatty Acids
Sterols
Phospholipids
Triglyceride
What chemical unit is located at the alpha end of a fatty acid? - ANS Carboxylic Acid Group
Structure of fatty acid - ANS methyl (omega) end
carboxylic (alpha) end
How many carbons are in a short-chain fatty acid? - ANS less than 8 carbons
How many carbons are in a medium-chain fatty acid? - ANS 8-12 carbons
How many carbons are in a long-chain fatty acid? - ANS more than 12 carbons
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,Long-chain fatty acids are more soluble in water and have lower melting points than short-
chain fatty acids - ANS False
Short-chain fatty acid - ANS Low melting point and relatively soluble in water
long-chain fatty acid - ANS high melting point and relatively insoluble in water
Polyunsaturated fatty acids have lower melting points than saturated fatty acids. - ANS True
Saturated fatty acids - ANS Fatty acids with no double bonds and high melting points
(typically solid)
Monounsaturated fatty acids - ANS One double bond; liquid at room temperature.
Polyunsaturated fatty acids - ANS Two or more double bonds; liquid at room temperature.
(low melting point)
Diagram of saturated and unsaturated fatty acids - ANS Saturated stacks neatly, while
unsaturated are kinked
Cis fatty acid - ANS Hydrogens on the same side of the fatty acid backbone
Trans fatty acid - ANS hydrogens are on opposite sides of the fatty acid backbone
A fatty acid has one carbon-carbon double bond, and the hydrogens attached to the carbons
are on opposite sides of the molecule. Which of the following is a correct description of this
fatty acid?
a. Monounsaturated and cis
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, b. Monounsaturated and trans
c. Polyunsaturated and cis
d. Polyunsaturated and trans - ANS b. Monounsaturated and trans
A fatty acid has the following alpha designation: cis9,cis12-18:2.
How many total carbons does this fatty acid have? - ANS 18
Omega designation - ANS omega-6 (6 carbons from omega end)
Alpha designation - ANS cis9, cis12-18:2
cis9, cis12 = Formation and location of double bonds
18 = # of carbons
2 = # of bonds
Beef is a food that has a high amount of saturated fat. In fact, the fat in beef is made up entirely
of saturated fat. - ANS False
Linoleic Acid - ANS An essential polyunsaturated fatty acid of the omega-6 family, with two
double bonds, promotes inflammation
Linolenic Acid - ANS An essential polyunsaturated fatty acid of the omega-3 family, with
three double bonds, reduces inflammation
Which of the following are essential fatty acids?
a. Linoleic acid
b. Linolenic acid
c. Lauric acid
d. All of the above
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QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
What are the four key players of Lipids? - ANS Fatty Acids
Sterols
Phospholipids
Triglyceride
What chemical unit is located at the alpha end of a fatty acid? - ANS Carboxylic Acid Group
Structure of fatty acid - ANS methyl (omega) end
carboxylic (alpha) end
How many carbons are in a short-chain fatty acid? - ANS less than 8 carbons
How many carbons are in a medium-chain fatty acid? - ANS 8-12 carbons
How many carbons are in a long-chain fatty acid? - ANS more than 12 carbons
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,Long-chain fatty acids are more soluble in water and have lower melting points than short-
chain fatty acids - ANS False
Short-chain fatty acid - ANS Low melting point and relatively soluble in water
long-chain fatty acid - ANS high melting point and relatively insoluble in water
Polyunsaturated fatty acids have lower melting points than saturated fatty acids. - ANS True
Saturated fatty acids - ANS Fatty acids with no double bonds and high melting points
(typically solid)
Monounsaturated fatty acids - ANS One double bond; liquid at room temperature.
Polyunsaturated fatty acids - ANS Two or more double bonds; liquid at room temperature.
(low melting point)
Diagram of saturated and unsaturated fatty acids - ANS Saturated stacks neatly, while
unsaturated are kinked
Cis fatty acid - ANS Hydrogens on the same side of the fatty acid backbone
Trans fatty acid - ANS hydrogens are on opposite sides of the fatty acid backbone
A fatty acid has one carbon-carbon double bond, and the hydrogens attached to the carbons
are on opposite sides of the molecule. Which of the following is a correct description of this
fatty acid?
a. Monounsaturated and cis
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, b. Monounsaturated and trans
c. Polyunsaturated and cis
d. Polyunsaturated and trans - ANS b. Monounsaturated and trans
A fatty acid has the following alpha designation: cis9,cis12-18:2.
How many total carbons does this fatty acid have? - ANS 18
Omega designation - ANS omega-6 (6 carbons from omega end)
Alpha designation - ANS cis9, cis12-18:2
cis9, cis12 = Formation and location of double bonds
18 = # of carbons
2 = # of bonds
Beef is a food that has a high amount of saturated fat. In fact, the fat in beef is made up entirely
of saturated fat. - ANS False
Linoleic Acid - ANS An essential polyunsaturated fatty acid of the omega-6 family, with two
double bonds, promotes inflammation
Linolenic Acid - ANS An essential polyunsaturated fatty acid of the omega-3 family, with
three double bonds, reduces inflammation
Which of the following are essential fatty acids?
a. Linoleic acid
b. Linolenic acid
c. Lauric acid
d. All of the above
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