51.Which carbon(s) of an omega-3 fatty acid has/have the first : 1401567

51.Which carbon(s) of an omega-3 fatty acid has/have the first : 1401567.


51.Which carbon(s) of an omega-3 fatty acid has/have the first double bond?

a.third carbon from the acid end

b.first 3 carbons from the acid end

c.third carbon from the methyl end

d.first 3 carbons from the methyl end

52.Which of the following is a feature of phospholipids?

a.resistant to digestion

b.soluble in both water and fat

c.highly susceptible to oxidation

d.found naturally only in animal foods

53.The composition of lecithin is differentiated from a triglyceride due to which of the following components?

a.choline and glycerol

b.phosphate and cholesterol

c.fatty acids and nitrogen

d.choline and phosphate

54.What type of compound is lecithin?

a.bile salt




55.What of the following is the usual fate of dietary lecithin?

a.unabsorbed and passes out in the feces

b.absorbed intact and incorporated into tissues

c.absorbed intact and broken down by the liver

d.hydrolyzed by the intestinal enzyme lecithinase

56.Which of the following is a feature of choline?

a.It is a part of lecithin.

b.It is a type of cis-fatty acid.

c.It is a type of trans-fatty acid.

d.It is attached to omega-3 fatty acids.

57.Which of the following is a characteristic of lecithin supplements?

a.mostly hydrolyzed in the intestine

b.contribute small amounts of magnesium

c.have an energy content of 4 kcalories per gram

d.contribute large amounts of omega-3 fatty acids

58.How much energy is contributed by 1 gram of lecithin in a dietary supplement?

a.0 kcal

b.4 kcal

c.7 kcal

d.9 kcal

59.What is the approximate energy value of 1 teaspoon of liquid lecithin supplement?

a.0 kcal

b.2 kcal

c.45 kcal

d.200 kcal

60.Which advice regarding lecithin supplementation would be most consistent with current evidence?

a.Supplements are recommended for those who bruise easily and they support the integrity of cell membranes.

b.Supplements are recommended after gallbladder removal to assist in the emulsification of fats in the digestive tract.

c.Supplements are not recommended since adequate lecithin is manufactured by the body

d.Supplements are not recommended since lecithin inhibits fat absorption



51.Which carbon(s) of an omega-3 fatty acid has/have the first : 1401567

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