Question 1

Which of the following substances is not an omega-3 fatty?

Accepted Answer

Linoleic acid is an omega-6 fatty acid, not an omega-3 fatty acid.

Question 2

Which of the following foods is the richest source of saturated fat?

Accepted Answer

Coconut oil is the richest source of saturated fat among the options listed, containing more than 80% saturated fats, which is higher than butter fat, palm oil, and chicken fat.

Question 3

Which of the following foods is the richest source of saturated fat?

Accepted Answer

B

Question 4

Which of the following foods is the richest source of saturated fat?

Accepted Answer

Palm oil is the richest source of saturated fat among the given options.

Question 5

Victor is making cake batter. When he added corn oil, fat-free milk, baking powder, and salt together, the oil and milk separated into two layers. To make a mixture that don't separate into oily and watery components, Victor should add _____ and stir the ingredients together.

Accepted Answer

Egg yolks contain lecithin, a natural emulsifier, which helps to blend oil and water-based ingredients together, preventing them from separating.

Question 6

Which of the following foods is the richest source of saturated fat?

Accepted Answer

Butter is the richest source of saturated fat, containing approximately 54% saturated fat. Pork fat, palm oil, and sunflower oil also contain saturated fat, but in lower percentages compared to butter.

Question 7

A fatty acid

Accepted Answer

A fatty acid is a long chain of carbons, typically with a carboxylic acid group on one end. These carbons are usually bonded to hydrogen atoms and can have double bonds between some of the carbons (making the fatty acid unsaturated). Fatty acids are not made up of glucose molecules or ring-like structures.

Question 8

Which of the following foods is the richest source of saturated fat?

Accepted Answer

Beef fat, also known as tallow, is the richest source of saturated fat among the options listed. Chicken fat also contains saturated fat, but not as much as beef fat. Sunflower oil and grapeseed oil are both sources of unsaturated fat, which is a healthier type of fat.

Question 9

Most lipids have _____ in their chemical structures.

Accepted Answer

Lipids are a diverse group of organic compounds that include fats, oils, waxes, and steroids. Fatty acids are the building blocks of most lipids, and they are characterized by long chains of hydrocarbons with a carboxyl group at one end. Nitrogen is not typically present in the chemical structures of lipids, and while phospholipids are a type of lipid, they are not present in all lipids. Glucose molecules are a type of carbohydrate and are not typically found in lipid structures.

Question 10

A scientist has isolated a fatty acid that has 26 carbons bonded together. All of the carbon atoms in the chain are connected by single bonds. Based on this information, the compound is a (an) _____ fatty acid.

Accepted Answer

A fatty acid with a chain of 26 carbons and no double bonds is considered saturated.

Question 11

Duncan was a subject in a clinical study that was designed to determine the effects of certain diets on health. While participating in the study, he had to live in a special medical unit at the university hospital. He wasn't permitted to eat anything other than the synthetic formula diet provided by the researchers. The formula contained vitamins, choline, minerals, animal protein, purified water, and corn starch. Within a few weeks, Duncan developed patches of scaly skin on his arms and legs and bald spots on his head. When _____ were added to his formula, the signs of the nutritional deficiency disappeared.

Accepted Answer

Essential fatty acids are necessary for maintaining healthy skin and hair. Duncan's development of scaly skin and bald spots suggests a deficiency in these nutrients. Adding essential fatty acids to his formula would have resolved these symptoms. None of the other choices would have addressed this specific deficiency.

Question 12

Which of the following substances is a dietary essential?

Accepted Answer

Alpha-linolenic acid is an essential fatty acid that cannot be produced by the body and must be obtained through the diet. High-density lipoprotein (HDL), cholesterol, and lecithin are not considered dietary essentials as the body can produce them on its own or they are not necessary for survival.

Question 13

A baby's body needs essential fatty acids

Accepted Answer

Essential fatty acids are crucial for the development of the nervous system in infants. They also help with building cell membranes and regulating inflammation. Glycogen is formed from glucose, and proteins are made up of amino acids. While maintaining fluid balance is important for overall health, it is not directly related to the need for essential fatty acids in a baby's body.

Question 14

In the body, some lipids

Accepted Answer

Some lipids provide insulation against cold temperatures by serving as a layer of insulation beneath the skin.

Question 15

In the body, certain lipids

Accepted Answer

Lipids, such as phospholipids and cholesterol, are important components of cell membranes. They help to maintain the structure and function of the cell membrane, which is essential for many cellular processes.

Question 16

In the body, fat

Accepted Answer

Fat provides energy to the body by being broken down into usable forms such as ATP through processes like beta-oxidation. While some vitamins are fat-soluble and can be stored in fat cells, fat does not stimulate the production of vitamins and minerals or speed up chemical reactions. It also does not play a role in the absorption of dietary fiber.

Question 17

Franklin wants to increase his intake of omega-6 fatty acids, so he should choose foods that contain _____.

Accepted Answer

Franklin should choose foods that contain linoleic acid, as it is an omega-6 fatty acid. The other fatty acids listed (docosahexaenoic acid, eicosapentaenoic acid, and alpha-linolenic acid) are all omega-3 fatty acids, not omega-6.

Question 18

Which of the following substances is an essential nutrient?

Accepted Answer

Linoleic acid is an essential fatty acid, meaning that it cannot be synthesized by the body and must be obtained from the diet. Lecithin, bile salt, and cholesterol are important substances in the body, but they are not classified as essential nutrients.

Question 19

Amber is underweight. To keep warm in chilly environments, she wears more clothing than her overweight friend Kim. Why?

Accepted Answer

Insulating fat under the skin helps to keep the body warm in chilly environments. Since Amber is underweight, she may not have as much insulating fat under her skin as Kim, which is why she wears more clothing to keep warm.

Question 20

Maggie was a subject in a clinical study that was designed to determine the effects of certain diets on health. While participating in the study, she had to live in a special unit of the university hospital. She could only eat the synthetic formula diet that was provided by the scientists who were in charge of the study. The formula contained vitamins, minerals, choline, egg protein, purified water, and potato starch. Within a few weeks, Maggie's hair began to fall out and she developed patches of scaly skin on her arms and legs. When _____ were added to her formula, the signs of the nutritional deficiency disappeared.

Accepted Answer

Alpha-linolenic and linoleic acids are essential fatty acids that cannot be synthesized by the body and must be obtained through the diet. Deficiencies in these fatty acids can lead to dry, scaly skin and hair loss. Adding them back into Maggie's formula would have addressed her nutritional deficiency and resolved her symptoms. None of the other options listed would have addressed her specific nutritional deficiency.

Quiz 6: Lipids: Focusing on Fats and Cholesterol

Which of the following substances is not an omega-3 fatty?

Which of the following foods is the richest source of saturated fat?

Which of the following foods is the richest source of saturated fat?

Which of the following foods is the richest source of saturated fat?

Victor is making cake batter. When he added corn oil, fat-free milk, baking powder, and salt together, the oil and milk separated into two layers. To make a mixture that don't separate into oily and watery components, Victor should add _____ and stir the ingredients together.

Which of the following foods is the richest source of saturated fat?

A fatty acid

Which of the following foods is the richest source of saturated fat?

Most lipids have _____ in their chemical structures.

A scientist has isolated a fatty acid that has 26 carbons bonded together. All of the carbon atoms in the chain are connected by single bonds. Based on this information, the compound is a (an) _____ fatty acid.

Which of the following substances is a dietary essential?

A baby's body needs essential fatty acids

In the body, some lipids

In the body, certain lipids

In the body, fat

Franklin wants to increase his intake of omega-6 fatty acids, so he should choose foods that contain _____.

Which of the following substances is an essential nutrient?

Amber is underweight. To keep warm in chilly environments, she wears more clothing than her overweight friend Kim. Why?