Question 1

Desi wants to follow the Dietary Guidelines recommendations for saturated fat intake. He currently consumes a diet that supplies 2700 kcal per day. To meet the recommendations of the Dietary Guidelines, he should limit his saturated fat intake to less than ____ kcal per day.

Accepted Answer

The Dietary Guidelines recommend limiting saturated fat intake to less than 10% of total daily calories. For a diet supplying 2700 kcal/day, 10% of 2700 kcal is 270 kcal.

Question 2

Which of the following foods is a natural source of trans fat?

Accepted Answer

Meat naturally contains small amounts of trans fats, which are formed in the gut of ruminant animals. These naturally occurring trans fats are found in meat and dairy products from ruminants such as cows and sheep.

Question 3

When he prepares food, Edgar wants to use ingredients that are poor sources of trans fat and don't contain cholesterol. Based on this information, which of the following fats or oils should he include in his recipes?

Accepted Answer

Corn oil is a good choice because it is a source of unsaturated fats, which are better for heart health than saturated or trans fats. It also does not contain cholesterol. Partially hydrogenated oils, such as margarine and shortening, are high in trans fats and should be avoided. Unsalted butter and lard are both high in saturated fat and cholesterol and should be limited in the diet.

Question 4

When she prepares food, Felicia wants to use a product that's a rich source of unsaturated fat. Based on this information, which of the following fats or oils should she select?

Accepted Answer

Canola oil is a rich source of unsaturated fat, specifically monounsaturated and polyunsaturated fats. Coconut oil, cream cheese, and unsalted butter are higher in saturated fat.

Question 5

Lecithin is a type of

Accepted Answer

Lecithin is a type of phospholipid, which is a type of lipid molecule that is a key component of cell membranes.

Question 6

Which of the following foods is a major source of saturated fat in American diets?

Accepted Answer

Pizza with mozzarella cheese and pepperoni slices is a major source of saturated fat in American diets because the cheese and pepperoni are high in saturated fat content. Dipping sauce made with olive oil and fresh basil leaves, salad dressing made with corn oil and vinegar, and guacamole made with avocados, tomatoes, and onions are not major sources of saturated fat in American diets.

Question 7

Jason is an endurance athlete training for a triathlon. While he's in training, he wants to follow the Dietary Guidelines recommendations for saturated fat intake. His current diet supplies 3600 kcal per day. To meet the recommendations of the Dietary Guidelines, he should limit his saturated fat intake to less than ____ grams per day.

Accepted Answer

The answer of Jason is an endurance athlete training for...

Question 8

Which of the following statements is true?

Accepted Answer

Phospholipids have a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail, which makes them partially water soluble. The other options are not true - alpha-linolenic acid and linoleic acid are essential fatty acids that the body cannot make on its own, trans fatty acids are a result of hydrogenation, and the body is capable of making cholesterol.

Question 9

Which of the following foods is a natural source of trans fat?

Accepted Answer

Butter is a natural source of trans fat. It contains small amounts of naturally occurring trans fats due to the digestive process of the animals it comes from. However, it is still recommended to limit the consumption of trans fats as much as possible for health reasons.

Question 10

Chylomicrons are a type of ______.

Accepted Answer

Chylomicrons are a type of lipoprotein that transport dietary fats (triglycerides, cholesterol, and fat-soluble vitamins) from the intestine to various tissues in the body. They are produced in the enterocytes (cells that line the small intestine) after the ingestion of fat-containing foods.

Question 11

Solid fats generally have a high proportion of ____ fatty acids.

Accepted Answer

Solid fats commonly come from animal sources and are high in saturated fatty acids. These fats increase cholesterol levels and are not heart-healthy. Polyunsaturated and monounsaturated fats are liquid at room temperature and come from plant sources. They are heart-healthy and can help lower cholesterol levels. Unsaturated fats can be either polyunsaturated or monounsaturated, but they are not solid at room temperature.

Question 12

When he prepares food, Nick wants to use a product that is a rich source of unsaturated fat and contains little or no trans fat. Based on this information, which of the following fats or oils should he select?

Accepted Answer

Canola oil is a rich source of unsaturated fats and contains very little trans fat, making it a healthier option compared to coconut oil, unsalted butter, and partially hydrogenated oil, which are high in saturated fats and/or trans fats.

Question 13

Chylomicrons ______.

Accepted Answer

Chylomicrons are synthesized by the cells of the small intestine and transport dietary lipids such as triglycerides and cholesterol from the intestine to other parts of the body. They are eventually metabolized by the liver. They are not a source of partially hydrogenated oils and are not eliminated in urine.

Question 14

Layla loves to cook, but she's concerned about the effects that certain dietary lipids may have on her health. She wants to prepare foods with fats and oils that are naturally low in trans fats and saturated fatty acids, and high in monounsaturated fatty acids. Based on this information, which of the following foods should she select?

Accepted Answer

Olive oil is naturally low in trans fats and saturated fatty acids, while being high in monounsaturated fatty acids. Coconut oil, cocoa butter, and butter fat all contain higher levels of saturated fatty acids.

Question 15

A group of scientists designed a clinical study to investigate the effects of cholesterol deficiency in humans. For the duration of the 8-week study, the adult subjects must live in a special research unit of a hospital. The only food the subjects can consume is a man-made formula that contains all known nutrients, except cholesterol. Based on this information, you would expect

Accepted Answer

The human body can synthesize cholesterol, so even in the absence of dietary cholesterol, individuals generally do not show signs of cholesterol deficiency, especially in the short term.

Question 16

Martha wants to follow the Dietary Guidelines recommendations for saturated fat intake. She currently consumes a diet that supplies 2700 kcal per day. To meet the recommendations of the Dietary Guidelines, she should limit her saturated fat intake to less than ____ grams per day.

Accepted Answer

The Dietary Guidelines recommend limiting saturated fat intake to less than 10% of total daily calories. For a diet supplying 2700 kcal/day, 10% of 2700 kcal is 270 kcal. Since each gram of fat provides 9 kcal, 270 kcal from saturated fat equals 30 grams (270 kcal ÷ 9 kcal/g = 30 g).

Question 17

Krystal is an endurance athlete training for a marathon. While she's in training, she wants to follow the Dietary Guidelines recommendations for saturated fat intake. Her current diet supplies 3150 kcal per day. To meet the recommendations of the Dietary Guidelines, she should limit her saturated fat intake to less than ____ grams per day.

Accepted Answer

The Dietary Guidelines recommend limiting saturated fat intake to less than 10% of daily calorie intake. For Krystal's diet, this would mean limiting saturated fat to 315 calories or 35 grams per day (3150 x 0.10 = 315).

Question 18

Two-month-old Jacob's diet lacks alpha-linolenic and linoleic acids. Based on this information, Jacob isn't _____.

Accepted Answer

Alpha-linolenic and linoleic acids are essential fatty acids that are required for proper growth and development, but cannot be produced by the body. If Jacob's diet lacks these fatty acids, it could lead to growth problems. It would not affect his ability to burn fat for energy, digest fiber properly, or make bile salts.

Question 19

Which of the following statements is true?

Accepted Answer

Fat contributes to the flavor of foods.

Question 20

Which of the following foods is a rich source of lecithin?

Accepted Answer

Peanut butter is a rich source of lecithin, which is a type of phospholipid that helps with the functioning of cell membranes and the transportation of fats in the body. Raw carrots, green apples, and Chinese cabbage do not contain significant amounts of lecithin.

Quiz 6: Lipids: Focusing on Fats and Cholesterol

Desi wants to follow the Dietary Guidelines recommendations for saturated fat intake. He currently consumes a diet that supplies 2700 kcal per day. To meet the recommendations of the Dietary Guidelines, he should limit his saturated fat intake to less than ____ kcal per day.

Which of the following foods is a natural source of trans fat?

When he prepares food, Edgar wants to use ingredients that are poor sources of trans fat and don't contain cholesterol. Based on this information, which of the following fats or oils should he include in his recipes?

When she prepares food, Felicia wants to use a product that's a rich source of unsaturated fat. Based on this information, which of the following fats or oils should she select?

Lecithin is a type of

Which of the following foods is a major source of saturated fat in American diets?

Which of the following statements is true?

Which of the following foods is a natural source of trans fat?

Chylomicrons are a type of ______.

Solid fats generally have a high proportion of ____ fatty acids.

When he prepares food, Nick wants to use a product that is a rich source of unsaturated fat and contains little or no trans fat. Based on this information, which of the following fats or oils should he select?

Chylomicrons ______.

Martha wants to follow the Dietary Guidelines recommendations for saturated fat intake. She currently consumes a diet that supplies 2700 kcal per day. To meet the recommendations of the Dietary Guidelines, she should limit her saturated fat intake to less than ____ grams per day.

Two-month-old Jacob's diet lacks alpha-linolenic and linoleic acids. Based on this information, Jacob isn't _____.

Which of the following statements is true?

Which of the following foods is a rich source of lecithin?