$$9 \\ \text{kcal/gram}$$ for fat, $$4 \\ \text{kcal/gram}$$ for carbohydrate, $$4 \\ \text{kcal/gram}$$ for protein

Question 1

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

Accepted Answer

One glycerol molecule and three fatty acid molecules

Question 2

Which of the following is NOT a function of dietary fat in the human body?

Accepted Answer

Serving as the main component of glycogen storage

Question 3

Which of the following statements about phospholipids is TRUE?

Accepted Answer

They are a major component of cell membranes due to their amphipathic nature.

Question 4

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

Accepted Answer

Their fatty acid chains are straight and can pack tightly together.

Question 5

Which of the following is a distinguishing feature of sterols compared to triglycerides and phospholipids?

Accepted Answer

Sterols contain multiple rings of carbon atoms in their structure.

Question 6

Which of the following dietary fats is most strongly associated with increased risk of cardiovascular disease (CVD)?

Accepted Answer

Trans fatty acids

Question 7

A food label lists 'partially hydrogenated oil' as an ingredient. What does this indicate about the fat content?

Accepted Answer

The product contains trans fatty acids created during hydrogenation.

Question 8

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

Accepted Answer

Linoleic acid

Question 9

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 10

Which of the following equations correctly represents the energy yield from fat compared to carbohydrates and protein?

Accepted Answer

$$9 \ 	ext{kcal/gram}$$ for fat, $$4 \ 	ext{kcal/gram}$$ for carbohydrate, $$4 \ 	ext{kcal/gram}$$ for protein

Question 11

Which of the following is a function of adipose tissue in the body?

Accepted Answer

Storing energy and providing insulation

Question 12

Which of the following statements about omega-3 fatty acids is TRUE?

Accepted Answer

They are found in high amounts in fish oils and flaxseed oil.

Question 13

A patient is advised to reduce their intake of saturated fats. Which of the following foods should they limit?

Accepted Answer

Butter

Question 14

Which of the following best explains why plant-based diets are generally considered more healthful regarding fat intake?

Accepted Answer

Plant-based diets are higher in unsaturated fats and lower in saturated fats.

Question 15

Which of the following is a correct statement about the digestion and absorption of fats?

Accepted Answer

Short-chain fatty acids are absorbed directly into the bloodstream.

Question 16

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

Accepted Answer

High intake of trans fats

Question 17

Which of the following strategies can help increase intake of beneficial fats?

Accepted Answer

Replacing butter with olive oil in cooking

Question 18

Which of the following best describes the role of eicosanoids derived from essential fatty acids?

Accepted Answer

They regulate cellular functions such as blood clotting and inflammation.

Question 19

Which of the following equations correctly represents the general formula for a saturated fatty acid?

Accepted Answer

$$\mathrm{C}_n\mathrm{H}_{2n+1}\mathrm{COOH}$$

Question 20

Which of the following statements about cholesterol is TRUE?

Accepted Answer

It is a sterol that is essential for making hormones and vitamin D.

Lipids: Structure, Types, and Functions in Nutrition

Study Guide - Practice Questions