Quiz on Lipids and Fatty Acids

Which of the following is a type of lipid?

• Proteins

• Carbohydrates

• Triglycerides

• Nucleic acids

What is the difference between saturated and unsaturated fatty acids?

• Saturated have double bonds, unsaturated do not

• Unsaturated have double bonds, saturated do not

• Both have double bonds

• Neither have double bonds

What is the omega (ω) end of a fatty acid chain?

• Consists of a carboxyl group

• Consists of a methyl group (CH3)

• Consists of a hydroxyl group

• Consists of an amino group

What is a characteristic of a saturated fatty acid?

• Contains double bonds between carbon atoms

• Loaded with all its hydrogen atoms

• Generally liquid at room temperature

• Have a lower melting point

What is the structure of oleic acid?

• Saturated fatty acid

• Monounsaturated fatty acid

• Polyunsaturated fatty acid

• Trans fatty acid

Which fatty acid type has a lower melting point than saturated fats?

• Saturated fatty acids

• Monounsaturated fatty acids

• Polyunsaturated fatty acids

• Trans fatty acids

What identifies polyunsaturated fatty acids?

• The length of the carbon chain

• The position of the double bond in relation to the methyl group

• The number of hydrogen atoms

• The presence of oxygen atoms

How many carbons away from the methyl end is the first double bond in omega-3 fatty acids?

• Two carbons

• Three carbons

• Four carbons

• Five carbons

What is the main type of omega-3 fatty acid?

• Linoleic acid

• Alpha-Linolenic acid (ALA)

• Palmitic acid

• Stearic acid

What is the result of the hydrogenation process on unsaturated fatty acids?

• Converts them to carbohydrates

• Converts them to saturated fatty acids

• Converts them to proteins

• Converts them to alcohols