Question 1

A fatty acid

Accepted Answer

Fatty acids are long chains of carbon atoms with hydrogen atoms attached. They can be saturated or unsaturated, but they do not contain glucose molecules or ring-like structures.

Question 2

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

Accepted Answer

Butter is the richest source of saturated fat among the given options.

Question 3

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

Accepted Answer

Beef fat is the richest source of saturated fat among the given options. It contains high amounts of cholesterol and is known to increase the risk of heart diseases if consumed in excess. It's advisable to limit the intake of saturated fats in the diet.

Question 4

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 was given a synthetic formula diet that provided 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

Maggie's symptoms of hair loss and scaly skin are indicative of a deficiency in essential fatty acids, which are not provided in the synthetic formula diet she was given. Adding essential fatty acids to her diet would address this deficiency and alleviate her symptoms. Therefore, the correct choice is C, essential fatty acids.

Question 5

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

Accepted Answer

Cocoa butter is the richest source of saturated fat among the options listed.

Question 6

Which of the following substances is a dietary essential?

Accepted Answer

Alpha-linolenic acid is a type of omega-3 fatty acid that cannot be synthesized by the body and must be obtained through the diet. It is therefore considered a dietary essential. Cholesterol, lecithin, and high-density lipoprotein are not dietary essentials.

Question 7

In the body,lipids

Accepted Answer

Lipids, also known as fats, are a highly concentrated source of energy, providing more than twice as much energy as carbohydrates and proteins. Lipids are stored in the body as adipose tissue and can be broken down when energy is needed by the body.

Question 8

_____ acid is an omega-6 fatty acid.

Accepted Answer

Linoleic acid is an omega-6 fatty acid.

Question 9

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 was given a synthetic formula diet that provided 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 _____ was added to his formula,the signs of the nutritional deficiency disappeared.

Accepted Answer

Duncan's symptoms suggest a deficiency in essential fatty acids, which are a type of polyunsaturated fat. Adding polyunsaturated fat to his diet could have resolved the nutritional deficiency and improved his skin and hair health. Calcium citrate, steroid hormones, and oleic acid would not address the symptoms described.

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 all single bonds between carbon atoms is a saturated fatty acid. The number of carbon atoms in the chain does not determine whether a fatty acid is unsaturated or saturated. Therefore, choices A and B are incorrect. Choice D refers to essential fatty acids which are unsaturated fatty acids that cannot be synthesized by the body and must be obtained from the diet. However, the question does not provide information on whether this fatty acid is essential or not.

Question 11

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 does not separate into oily and watery components,Victor should add _____ and stir the ingredients together.

Accepted Answer

Egg yolks act as an emulsifier, which helps to mix the oil and milk together and prevent separation.

Question 12

In the body,lipids

Accepted Answer

Lipids provide insulation against cold temperatures by storing energy in the form of fat cells beneath the skin.

Answer: D 
 Lipids help with the absorption and transportation of fat-soluble vitamins (A, D, E, and K) and other nutrients, including proteins.

Question 13

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

Accepted Answer

Palm oil is the richest source of saturated fat, with almost 50% of its total fat content being saturated.

Question 14

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

Accepted Answer

Olive oil is a rich source of unsaturated fats, particularly monounsaturated fats, which are considered heart-healthy.

Question 15

In the body,lipids

Accepted Answer

Lipids, also known as fats, are a critical component of cell membranes. They help to maintain the structure and fluidity of the membrane, allowing for essential transport of nutrients and other molecules in and out of cells.

Question 16

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 synthetic formula that contains all known nutrients,except cholesterol.Based on this information,you would expect

Accepted Answer

Cholesterol is synthesized by the liver, so the body can produce its own cholesterol even if it is not consumed in the diet. Therefore, subjects are unlikely to show signs of cholesterol deficiency during the study.

Question 17

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 given options.

Question 18

Most lipids have _____ in their chemical structures.

Accepted Answer

Lipids typically have fatty acids in their chemical structures, which are molecules composed of long chains of carbon atoms with a carboxyl group (-COOH) at one end. Other common components of lipids include glycerol, which can form the backbone of triglycerides, and various types of sterols (such as cholesterol). Glucose molecules, nitrogen atoms, and phospholipids are not as commonly found in lipids.

Question 19

A baby's body uses essential fatty acids

Accepted Answer

Essential fatty acids, such as omega-3 and omega-6, are crucial for the development of the nervous system in babies. They play a role in the growth and function of the brain and eyes, and can also affect cognitive and behavioral development. Essential fatty acids are not used to make proteins, form glycogen, or maintain red blood cells.

Question 20

Which of the following substances is a dietary essential?

Accepted Answer

Linoleic acid is an essential fatty acid that cannot be synthesized by the human body and must be obtained through the diet. The other options are also fatty acids, but they are not considered essential because the body can synthesize them from other substances.

Quiz 6: Lipids: Focusing on Fats and Cholesterol

A fatty acid

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?

Which of the following substances is a dietary essential?

In the body,lipids

_____ acid is an omega-6 fatty acid.

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.

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 does not separate into oily and watery components,Victor should add _____ and stir the ingredients together.

In the body,lipids

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

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

In the body,lipids

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

Most lipids have _____ in their chemical structures.

A baby's body uses essential fatty acids

Which of the following substances is a dietary essential?