Question 1

Which of the following foods is a naturally rich source of omega-3 fatty acids?

Accepted Answer

Baked trout is a fish that is naturally rich in omega-3 fatty acids. Brown rice, raw carrots, and Jonathan apples do not contain significant amounts of omega-3 fatty acids.

Question 2

Don recorded his food intake for a week and then used a computerized dietary analysis program to analyze his diet record. According to the results of the analysis, his average daily saturated fat intake was 5% of total calories; his average daily unsaturated fat intake was 12% of total calories; and his average daily cholesterol intake was 350 mg. Based on this information, his total fat intake is _____ the Acceptable Macronutrient Distribution Range.

Accepted Answer

The answer of Don recorded his food intake for a...

Question 3

Most lipid digestion occurs in the

Accepted Answer

Most lipid digestion occurs in the small intestine, where bile from the liver emulsifies lipids into smaller droplets that can be easily broken down by pancreatic enzymes called lipases.

Question 4

Owen usually consumes about 3000 kcal/day. On average, his fat intake is approximately 80 g/day. Based on this information, which of the following statements describes Owen's diet?

Accepted Answer

Without knowing Owen's specific energy needs, it's impossible to determine if his fat intake is too high or low. However, we do know that his fat intake falls within the Acceptable Macronutrient Distribution Range (AMDR) of 20-35% of daily calories, which is considered a healthy range for most individuals. We cannot determine if Owen's fat intake meets the RDA for essential fatty acids, as we do not have information on the specific types of fats he is consuming.

Question 5

____ are a major end product of fat digestion.

Accepted Answer

Monoglycerides are the major end product of fat digestion. They are formed by the breakdown of triglycerides by lipase enzymes in the small intestine. Monoglycerides along with fatty acids are reassembled into new triglycerides that are then packaged into chylomicrons and enter the lymphatic system for transport to the rest of the body. Oxidized lipoproteins are not end products of fat digestion, but rather a form of lipoproteins that have been modified by oxidation and can contribute to the development of atherosclerosis. Bile salts and micelles are involved in the digestion and absorption of fats but are not end products. Bile salts emulsify fats to increase their surface area for digestion by lipases, while micelles are formed by the combination of bile salts, fatty acids, and monoglycerides to aid in their absorption into the intestinal cells.

Question 6

Brett eats _____ to increase his intake of omega-3 fatty acids.

Accepted Answer

Canned sardines are a good source of omega-3 fatty acids, containing approximately 1.3 grams per 3.5 ounces. Baked beans, whole-wheat bread, and fresh strawberries do not contain significant amounts of omega-3 fatty acids.

Question 7

Which of the following statements is true?

Accepted Answer

A polyunsaturated fatty acid has two or more double bonds between carbons in the hydrocarbon chain. Option A is incorrect as a triglyceride has three fatty acids attached to a glycerol molecule. Option B is incorrect as the acid group is present at the alpha end of a fatty acid molecule. Option C is incorrect as a saturated fatty acid lacks double bonds in its hydrocarbon chain.

Question 8

Which of the following foods is a naturally rich source of polyunsaturated fatty acids?

Accepted Answer

Polyunsaturated fatty acids are primarily found in plant-based sources such as nuts, seeds, and oils. Walnut oil is a rich source of polyunsaturated fatty acids, specifically alpha-linolenic acid (an omega-3 fatty acid). Chicken fat and cream cheese are high in saturated fats, while olive oil is a source of monounsaturated fatty acids.

Question 9

Which of the following foods is a naturally rich source of omega-3 fatty acids?

Accepted Answer

Canned salmon is a naturally rich source of omega-3 fatty acids, specifically EPA and DHA, which are important for brain and heart health. The other options, including 2% milk, green peas, and pork loin, do not contain significant amounts of omega-3s.

Question 10

Amanda consumes approximately 2500 kcal/day. According to recommendations of the Dietary Guidelines, she should limit her saturated fat intake to fewer than ____ kcal/day

Accepted Answer

The answer of Amanda consumes approximately 2500 kcal/day. According to...

Question 11

Which of the following substances can interfere with the recycling of bile salts in the body?

Accepted Answer

Soluble fiber can bind to bile salts in the intestine and prevent their reabsorption, leading to their excretion. This process can interfere with the recycling of bile salts in the body.

Question 12

Which of the following foods is a naturally rich source of omega-3 fatty acids?

Accepted Answer

Tuna fish is a naturally rich source of omega-3 fatty acids. Whole-wheat bread, baked chicken, and ground beef do not contain significant amounts of omega-3 fatty acids.

Question 13

April wants to add _____ to her salad, because the food is a naturally rich source of omega-3 fats.

Accepted Answer

Walnuts are a naturally rich source of omega-3 fats. Orange slices, cheddar cheese, and whole-grain bread cubes do not contain significant amounts of omega-3 fats.

Question 14

Maria usually consumes about 2000 kcal/day. On average, her fat intake is approximately 90 g/day. Based on this information, which of the following statements describes Maria's diet?

Accepted Answer

Fat provides about 9 kcal per gram. Maria's fat intake of 90 g/day would thus provide about 810 kcal, which is 40.5% of her total caloric intake (810 kcal from fat / 2000 total kcal/day * 100). The Acceptable Macronutrient Distribution Range (AMDR) for fat is 20-35% of total daily calories. Maria's fat intake exceeds this range, indicating her fat intake is higher than the AMDR.

Question 15

Which of the following substances emulsifies lipids during digestion?

Accepted Answer

Bile salts are produced in the liver and released into the small intestine to emulsify lipids, which breaks them down into smaller droplets that can be more easily digested by pancreatic lipase. Pancreatic lipase is responsible for breaking down lipids into their component parts, but it requires the emulsification provided by bile salts to efficiently do its job. Salivary amylase is an enzyme that breaks down carbohydrates, not lipids. Soluble fiber is important for gastrointestinal health but does not directly emulsify lipids.

Question 16

Sylvia has a disease that blocks the delivery of bile and pancreatic amylase to her small intestine. Which of the following conditions is a sign or symptom of this disease?

Accepted Answer

Greasy stools that float are a sign of malabsorption of fat, which can occur when there is a blockage in the delivery of bile and pancreatic enzymes to the small intestine. Chronic heartburn, frequent headaches, and weight gain are not necessarily associated with this condition.

Question 17

Chase is a 22-year-old college student. On average, he consumes 2750 kcal per day. According to recommendations of the Dietary Guidelines, Chase's saturated fat intake should be fewer than _____ kcal per day.

Accepted Answer

The answer of Chase is a 22-year-old college student. On...

Question 18

Nikki has a disease that interferes with the production of lipase in her pancreas. Based on this information, a sign of this disease is

Accepted Answer

Lipase is an enzyme produced by the pancreas that helps break down fats in the small intestine for absorption. If the body is not producing enough lipase, there will be high amounts of undigested fat in the stools, which is known as steatorrhea. Therefore, the best choice is D – high amounts of fat in the stools – as a sign of this disease.

Question 19

Bill recorded his food intake for a week and then used a computerized dietary analysis program to analyze his diet record. According to the results of the analysis, his average fat intake was _____ of total calories each day, which is within the Acceptable Macronutrient Distribution Range.

Accepted Answer

The Acceptable Macronutrient Distribution Range (AMDR) for fat in a diet is 20-35% of total calories. Therefore, an average fat intake of 25% of total calories each day falls within this recommended range.

Question 20

Phyllis recorded her food intake for a week and then used a computerized dietary analysis program to analyze her diet record. According to the results of the analysis, her average daily saturated fat intake was 10% of total calories; her average daily unsaturated fat intake was 35% of total calories; and her average daily cholesterol intake was 250 mg. Based on this information, her total fat intake is _____ the Acceptable Macronutrient Distribution Range.

Accepted Answer

The Acceptable Macronutrient Distribution Range (AMDR) for total fat intake is 20-35% of total calories. Phyllis's average daily total fat intake is 10% + 35% = 45% of total calories, which is above the AMDR.

Quiz 6: Lipids: Focusing on Fats and Cholesterol

Which of the following foods is a naturally rich source of omega-3 fatty acids?

Most lipid digestion occurs in the

Owen usually consumes about 3000 kcal/day. On average, his fat intake is approximately 80 g/day. Based on this information, which of the following statements describes Owen's diet?

____ are a major end product of fat digestion.

Brett eats _____ to increase his intake of omega-3 fatty acids.

Which of the following statements is true?

Which of the following foods is a naturally rich source of polyunsaturated fatty acids?

Which of the following foods is a naturally rich source of omega-3 fatty acids?

Amanda consumes approximately 2500 kcal/day. According to recommendations of the Dietary Guidelines, she should limit her saturated fat intake to fewer than ____ kcal/day

Which of the following substances can interfere with the recycling of bile salts in the body?

Which of the following foods is a naturally rich source of omega-3 fatty acids?

April wants to add _____ to her salad, because the food is a naturally rich source of omega-3 fats.

Maria usually consumes about 2000 kcal/day. On average, her fat intake is approximately 90 g/day. Based on this information, which of the following statements describes Maria's diet?

Which of the following substances emulsifies lipids during digestion?

Sylvia has a disease that blocks the delivery of bile and pancreatic amylase to her small intestine. Which of the following conditions is a sign or symptom of this disease?

Chase is a 22-year-old college student. On average, he consumes 2750 kcal per day. According to recommendations of the Dietary Guidelines, Chase's saturated fat intake should be fewer than _____ kcal per day.

Nikki has a disease that interferes with the production of lipase in her pancreas. Based on this information, a sign of this disease is

Bill recorded his food intake for a week and then used a computerized dietary analysis program to analyze his diet record. According to the results of the analysis, his average fat intake was _____ of total calories each day, which is within the Acceptable Macronutrient Distribution Range.