Q: Which of the following equations correctly represents the structure of a triglyceride?

$\text{Triglyceride} = \text{Glycerol} + 3 \times \text{Fatty Acid}$

Question 1

Which of the following statements best describes the structural difference between triglycerides and phospholipids?

Accepted Answer

Triglycerides have three fatty acids attached to a glycerol backbone, while phospholipids have two fatty acids and a phosphate group attached to a glycerol backbone.

Question 2

A patient is advised to increase their intake of omega-3 fatty acids to reduce their risk of heart disease. Which of the following foods would be the best source of EPA and DHA?

Accepted Answer

Fatty fish such as salmon and mackerel

Question 3

Which of the following equations correctly represents the structure of a triglyceride?

Accepted Answer

$	ext{Triglyceride} = 	ext{Glycerol} + 3 	imes 	ext{Fatty Acid}$

Question 4

Which lipoprotein is primarily responsible for removing cholesterol from the body and delivering it to the liver?

Accepted Answer

HDL (High-Density Lipoprotein)

Question 5

A food product label lists 'partially hydrogenated oil' as an ingredient. What type of fat is most likely present in this product, and what is a health concern associated with it?

Accepted Answer

Trans fat; it increases LDL cholesterol and risk of heart disease.

Question 6

Which of the following statements about cholesterol is TRUE?

Accepted Answer

Cholesterol is a precursor for vitamin D, bile acids, and sex hormones.

Question 7

A person consumes 2,500 kcal per day. According to the Acceptable Macronutrient Distribution Range (AMDR), how many calories should come from fat each day?

Accepted Answer

$500 	ext{ to } 875$ calories

Question 8

Which of the following best explains why fat is necessary in the diet?

Accepted Answer

Fat is required for the absorption of fat-soluble vitamins (A, D, E, K) and carotenoids.

Question 9

Which of the following dietary changes would most likely lower LDL cholesterol levels?

Accepted Answer

Replacing saturated and trans fats with unsaturated fats

Question 10

A patient is following a diet high in saturated fat and cholesterol. Which of the following health outcomes is most likely to occur?

Accepted Answer

Increased risk of heart disease due to higher LDL cholesterol

Question 11

Which of the following is a function of essential fatty acids in the body?

Accepted Answer

They help maintain healthy skin cells, nerves, and cell membranes.

Question 12

Which of the following best describes the effect of omega-3 fatty acids on cardiovascular health?

Accepted Answer

They reduce the risk of heart disease, stroke, and diabetes.

Question 13

A food scientist is developing a reduced-fat cookie using a carbohydrate-based fat substitute. What is the main function of this fat substitute in the product?

Accepted Answer

To retain moisture and provide texture similar to fat

Question 14

Which of the following statements about fat digestion and absorption is correct?

Accepted Answer

Most fat digestion occurs in the small intestine, where bile emulsifies fat and enzymes break it down into monoglycerides and fatty acids.

Question 15

Which of the following is a reason why reduced-fat or fat-free products may not always help with weight management?

Accepted Answer

They can still contain significant calories, leading to weight gain if overconsumed.

Question 16

Which of the following best describes the structure of cholesterol?

Accepted Answer

It is composed of four connecting rings of carbon and hydrogen.

Question 17

A person wants to lower their LDL cholesterol through diet. Which combination of dietary changes would be most effective?

Accepted Answer

Increase intake of unsaturated fats, soluble fiber, and fish; decrease saturated and trans fats.

Question 18

Which of the following is a role of lecithin in the body and in food products?

Accepted Answer

It acts as an emulsifier, helping to mix fats with water.

Question 19

Which of the following best explains why it is unhealthy to eliminate all saturated fat from the diet?

Accepted Answer

Some saturated fat is necessary for normal body function and cell membrane integrity.

Question 20

Which of the following dietary patterns is associated with a lower risk of heart disease, according to the Mediterranean Diet?

Accepted Answer

High intake of unsaturated fats from plant oils, nuts, and fish; low intake of saturated and trans fats.

Fats, Oils, and Other Lipids: Structure, Function, Digestion, and Health

Study Guide - Practice Questions

Study Guide - Flashcards