Q: Which of the following equations correctly represents the energy provided by fat?

$$E = 9 \times m_{fat}$$, where $$E is $$energy in kcal and $$m_{fat} is $$mass of fat in grams.

Question 1

Which of the following statements best describes the structure of a triglyceride?

Accepted Answer

A molecule composed of three fatty acids and one glycerol backbone.

Question 2

Which of the following is NOT a function of phospholipids in the body?

Accepted Answer

They are the main storage form of energy in adipose tissue.

Question 3

Which of the following best explains why saturated fats are solid at room temperature?

Accepted Answer

Their fatty acid chains can pack tightly together due to the absence of double bonds.

Question 4

Which of the following equations correctly represents the energy provided by fat?

Accepted Answer

$$E = 9 	imes m_{fat}$$, where $$E is $$energy in kcal and $$m_{fat} is $$mass of fat in grams.

Question 5

A patient is diagnosed with atherosclerosis. Which of the following best describes what is happening in their arteries?

Accepted Answer

Lipid deposits and scar tissue are building up in the artery walls, impairing blood flow.

Question 6

Which of the following dietary changes would most likely improve blood lipid profiles and reduce cardiovascular disease risk?

Accepted Answer

Increasing intake of omega-3 fatty acids and reducing saturated fat intake.

Question 7

Which of the following is an essential fatty acid that must be obtained from the diet?

Accepted Answer

Linoleic acid (omega-6)

Question 8

Which of the following best describes the process of hydrogenation?

Accepted Answer

The addition of hydrogen atoms to unsaturated fatty acids, converting them to a more solid form.

Question 9

A food label lists 'partially hydrogenated oil' as an ingredient. What type of fat is most likely present in this food?

Accepted Answer

Trans fatty acids

Question 10

Which of the following is a function of cholesterol in the body?

Accepted Answer

It is used to synthesize sex hormones, bile, adrenal hormones, and vitamin D.

Question 11

Which of the following best explains why unsaturated fatty acids are liquid at room temperature?

Accepted Answer

Their double bonds create kinks, preventing tight packing.

Question 12

Which of the following is a modifiable risk factor for cardiovascular disease?

Accepted Answer

Physical inactivity

Question 13

Which of the following best describes the role of bile in fat digestion?

Accepted Answer

Bile emulsifies large fat droplets into smaller droplets, increasing surface area for enzyme action.

Question 14

A person consumes 2,000 kcal per day. According to the Acceptable Macronutrient Distribution Range (AMDR), what is the maximum number of kcal from fat they should consume?

Accepted Answer

$$2,000 	imes 0.35 = 700$$ kcal

Question 15

Which of the following best describes the difference between cis and trans fatty acids?

Accepted Answer

Cis fatty acids have hydrogen atoms on the same side of the double bond, while trans fatty acids have them on opposite sides.

Question 16

Which of the following is a recommended strategy to reduce blood pressure according to the DASH diet?

Accepted Answer

Limiting dietary sodium intake

Question 17

Which of the following best explains why fat replacers like olestra have not been effective in reducing obesity rates?

Accepted Answer

They can cause gastrointestinal side effects and do not significantly reduce overall calorie intake.

Question 18

Which of the following best describes the fate of chylomicrons after they are formed in the intestinal mucosal cell?

Accepted Answer

They transport absorbed fats through the lymphatic system and then into the bloodstream.

Question 19

Which of the following is a primary reason why fat is more satiating than carbohydrates or protein?

Accepted Answer

Fat takes longer to digest, leading to a slower release of energy into the bloodstream.

Question 20

Which of the following best describes the role of LDL in cardiovascular disease?

Accepted Answer

LDL transports cholesterol throughout the body and contributes to plaque formation in arteries.

Fats: Essential Energy-Supplying Nutrients and Cardiovascular Disease

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