Question 1

Triacylglycerols, or triglycerides, are triesters formed from glycerol and three _____ molecules.

Accepted Answer

The answer of Triacylglycerols, or triglycerides, are triesters formed from...

Question 2

The most common unsaturated fatty acids are palmitic and stearic acid.

Accepted Answer

Palmitic and stearic acid are actually saturated fatty acids, not unsaturated. The most common unsaturated fatty acids are oleic, linoleic, and alpha-linolenic acid.

Question 3

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH₃ group.

Accepted Answer

This is a correct statement about the classification of unsaturated fatty acids as omega-n acids. The value of n indicates the position of the first double bond from the omega (methyl) end of the molecule.

Question 4

Two common types of phospholipids are _____ and _____.

Accepted Answer

The answer of Two common types of phospholipids are _____...

Question 5

The molecule below is an omega-9 fatty acid.

Accepted Answer

The answer of The molecule below is an omega-9 fatty...

Question 6

Lipids come in a wide variety of structures and have many different functions.

Accepted Answer

Lipids are a diverse group of compounds that have different structures and functions. Some important lipid functions include energy storage, insulation, and signaling. Examples of lipids include fats, oils, phospholipids, steroids, and waxes.

Question 7

An individual can survive on a completely fat-free diet.

Accepted Answer

An individual cannot survive on a completely fat-free diet as essential fatty acids are required for normal body functioning and must be obtained from the diet.

Question 8

The structure shown below is an example of a trans fatty acid.

Accepted Answer

The answer of The structure shown below is an example...

Question 9

Cell membranes are made up of a structure called a(n)_____.

Accepted Answer

The answer of Cell membranes are made up of a...

Question 10

The molecule below is an omega-9 fatty acid. CH₃(CH₂)₉CH=CH(CH₂)₇COOH

Accepted Answer

The answer of The molecule below is an omega-9 fatty...

Question 11

_____ are the simplest hydrolyzable lipids.

Accepted Answer

The answer of _____ are the simplest hydrolyzable lipids....

Question 12

There is only one polar bond in Vitamin D4 (structure shown).

Accepted Answer

Vitamin D4 (22,23-dihydroergocalciferol) has multiple polar bonds due to the presence of hydroxyl groups (-OH) and double bonds (-C=C-).

Question 13

The _____ is the aqueous medium inside the cell, separated from water outside the cell by the cell membrane.

Accepted Answer

The answer of The _____ is the aqueous medium inside...

Question 14

Triacylglycerols are stored in _____ cells below the skin and concentrated in some regions of the body.

Accepted Answer

The answer of Triacylglycerols are stored in _____ cells below...

Question 15

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C₄.

Accepted Answer

Zileuton (Zyflo) does indeed work by blocking the synthesis of leukotriene C₄, which is a chemical that causes inflammation and constriction of airways in people with asthma. By treating the underlying cause of asthma, rather than just its symptoms, zileuton can help reduce the frequency and severity of asthma attacks over time.

Question 16

As the number of double bonds in a fatty acid increases, the melting point _____.

Accepted Answer

The answer of As the number of double bonds in...

Question 17

Lipids are soluble in organic solvents and aqueous solutions.

Accepted Answer

Lipids are soluble in organic solvents but insoluble in aqueous solutions due to their nonpolar nature.

Question 18

Lipids are defined as biomolecules that contain fatty acids as part of their structure.

Accepted Answer

Lipids are a broad class of molecules that are defined by their insolubility in water rather than by the presence of fatty acids in their structure. Some lipids, like triglycerides, contain fatty acids, but others, such as sterols and phospholipids, do not necessarily include them as part of their structure.

Question 19

Saturated fatty acids have no double bonds in their long hydrocarbon chains.

Accepted Answer

Saturated fatty acids have single bonds between all the carbon atoms in their long hydrocarbon chains, resulting in a fully saturated structure.

Question 20

Aspirin and celecoxib act as anti-inflammatory agents by inactivating both the COX-1 and COX-2 enzymes.

Accepted Answer

Aspirin inactivates both COX-1 and COX-2 enzymes, but celecoxib selectively inhibits only the COX-2 enzyme.

Quiz 19: Lipids

Triacylglycerols, or triglycerides, are triesters formed from glycerol and three _____ molecules.

The most common unsaturated fatty acids are palmitic and stearic acid.

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH₃ group.

Two common types of phospholipids are _ and _.

The molecule below is an omega-9 fatty acid.

Lipids come in a wide variety of structures and have many different functions.

An individual can survive on a completely fat-free diet.

The structure shown below is an example of a trans fatty acid.

Cell membranes are made up of a structure called a(n)_____.

The molecule below is an omega-9 fatty acid. CH₃(CH₂)₉CH=CH(CH₂)₇COOH

_____ are the simplest hydrolyzable lipids.

There is only one polar bond in Vitamin D4 (structure shown).

The _____ is the aqueous medium inside the cell, separated from water outside the cell by the cell membrane.

Triacylglycerols are stored in _____ cells below the skin and concentrated in some regions of the body.

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C₄.

As the number of double bonds in a fatty acid increases, the melting point _____.

Lipids are soluble in organic solvents and aqueous solutions.

Lipids are defined as biomolecules that contain fatty acids as part of their structure.

Saturated fatty acids have no double bonds in their long hydrocarbon chains.

Aspirin and celecoxib act as anti-inflammatory agents by inactivating both the COX-1 and COX-2 enzymes.

Quiz 19: Lipids

Triacylglycerols, or triglycerides, are triesters formed from glycerol and three _____ molecules.

The most common unsaturated fatty acids are palmitic and stearic acid.

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH3 group.

Two common types of phospholipids are _____ and _____.

The molecule below is an omega-9 fatty acid.

Lipids come in a wide variety of structures and have many different functions.

An individual can survive on a completely fat-free diet.

The structure shown below is an example of a trans fatty acid.

Cell membranes are made up of a structure called a(n)_____.

The molecule below is an omega-9 fatty acid. CH3(CH2)9CH=CH(CH2)7COOH

_____ are the simplest hydrolyzable lipids.

There is only one polar bond in Vitamin D4 (structure shown).

The _____ is the aqueous medium inside the cell, separated from water outside the cell by the cell membrane.

Triacylglycerols are stored in _____ cells below the skin and concentrated in some regions of the body.

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C4.

As the number of double bonds in a fatty acid increases, the melting point _____.

Lipids are soluble in organic solvents and aqueous solutions.

Lipids are defined as biomolecules that contain fatty acids as part of their structure.

Saturated fatty acids have no double bonds in their long hydrocarbon chains.

Aspirin and celecoxib act as anti-inflammatory agents by inactivating both the COX-1 and COX-2 enzymes.

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH₃ group.

Two common types of phospholipids are _ and _.

The molecule below is an omega-9 fatty acid. CH₃(CH₂)₉CH=CH(CH₂)₇COOH

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C₄.