Question 1

Metabolism is

Accepted Answer

Metabolism is the broad term used to describe all chemical reactions that occur within an organism, including the breakdown of food molecules to generate energy, the synthesis of new molecules and the elimination of waste products. It is not a form of energy, a rate at which cells produce energy or a way of living.

Question 2

A serving of food contains 36 g carbohydrate, 4 g protein, 4 ounces of water, 10 g fat, 25 mg vitamin B-6, 1.2 mg zinc, and 1.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Accepted Answer

The caloric content is calculated by adding the calories from carbohydrates, proteins, and fats. Carbohydrates and proteins each provide 4 kcal per gram, and fats provide 9 kcal per gram. Thus, (36 g carbohydrate x 4 kcal/g) + (4 g protein x 4 kcal/g) + (10 g fat x 9 kcal/g) = 144 + 16 + 90 = 250 kcal.

Question 3

A serving of food contains 20 g carbohydrate, 6 g protein, 10 g fat, 5 mg vitamin C, and 3 ounces of water. Based on this information, a serving of this food supplies ____ kcal.

Accepted Answer

To calculate the kcal content of the food, we need to use the following conversion factors:
1 g carbohydrate = 4 kcal
1 g protein = 4 kcal
1 g fat = 9 kcal

Using these conversion factors, we can calculate the kcal content of each macronutrient in the serving:
Carbohydrate = 20 g x 4 kcal/g = 80 kcal
Protein = 6 g x 4 kcal/g = 24 kcal
Fat = 10 g x 9 kcal/g = 90 kcal

We also know the food contains 5 mg of vitamin C and 3 ounces of water, which do not contribute any kcal.

Total kcal in the serving = 80 kcal + 24 kcal + 90 kcal = 194 kcal

Therefore, the correct answer is C.

Question 4

According to numerous scientific studies, low levels of physical activity are associated with increased chances of developing excess body fat and type 2 diabetes. Based on this information, lack of physical activity is a

Accepted Answer

Lack of physical activity is a risk factor for developing excess body fat and type 2 diabetes. Risk factors increase the likelihood of developing a condition or disease, but they do not necessarily cause it.

Question 5

Which of the following conditions is a leading cause of death in the United States that's related to dietary practices?

Accepted Answer

Cancer is a leading cause of death in the United States that is related to dietary practices. Poor dietary habits, such as excessive consumption of processed and red meat, sugar, and alcohol, have been linked to an increased risk of various types of cancer, including colorectal, breast, and liver cancer.

Question 6

Which of the following behaviors is a risk factor for heart disease?

Accepted Answer

Smoking cigarettes is a well-established risk factor for heart disease. Being taller than average, having attention deficit hyperactivity disorder, and consuming excess vitamin C are not risk factors for heart disease.

Question 7

Which of the following substances is a nutrient that doesn't provide any energy for the human body?

Accepted Answer

Water is a nutrient that doesn't provide any energy for the human body. It is essential for many bodily functions, such as transporting nutrients and oxygen, regulating body temperature, and maintaining proper hydration. Alcohol, carbohydrates, and proteins all provide energy in the form of calories.

Question 8

Which of the following substances is a nutrient that doesn't provide any energy for the human body?

Accepted Answer

Iron is a mineral nutrient that doesn't provide any energy for the human body. Glucose, alcohol, and protein all provide energy in the form of calories.

Question 9

Which of the following substances is a nutrient that doesn't supply any energy for the human body?

Accepted Answer

Nutrients that do not provide energy for the human body are called micronutrients or non-energy-yielding nutrients. Vitamin C is a micronutrient that is essential for the growth and repair of body tissues, but it does not supply any energy. Alcohol, fat, and carbohydrate are all macronutrients that provide energy for the body in the form of calories.

Question 10

A serving of food contains 25 g carbohydrate, 10 g protein, 8 g fat, 5 mg vitamin iron, and 4 ounces of water. Based on this information, a serving of this food supplies ___kcal.

Accepted Answer

Carbohydrates provide 4 kcal/g, proteins provide 4 kcal/g, and fats provide 9 kcal/g. Therefore, the total kcal is (25g x 4) + (10g x 4) + (8g x 9) = 100 + 40 + 72 = 212 kcal.

Question 11

Which of the following nutrients is a source of energy?

Accepted Answer

Protein is not only essential for building and repairing tissues, but it is also a source of energy. When the body does not have enough carbohydrates or fats for energy, it will turn to protein for fuel. Iron, vitamin D, and cholesterol do not provide energy.

Question 12

Which of the following foods is naturally a rich source of phytochemicals?

Accepted Answer

Grapes are a rich source of phytochemicals. Phytochemicals are biologically active substances found in plants, and they have been shown to have beneficial effects on human health. Hamburger, margarine, and tuna are not naturally rich sources of phytochemicals.

Question 13

A serving of food contains 24 g carbohydrate, 10 g protein, 3 ounces of water, 6 g fat, 25 mg vitamin B-12, and 1.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Accepted Answer

To calculate the total kcal, use the macronutrient calorie values: carbohydrates and proteins provide 4 kcal/g, and fats provide 9 kcal/g. Thus, (24g carbs * 4 kcal/g) + (10g protein * 4 kcal/g) + (6g fat * 9 kcal/g) = 96 + 40 + 54 = 190 kcal. Water, vitamin B-12, and iron do not provide calories.

Question 14

Diet refers to a person's

Accepted Answer

Diet refers to a person's usual pattern of food choices. It encompasses the types of food and beverages consumed regularly and can have a significant impact on health outcomes. Weight loss efforts and current nutrient intake are important factors in overall health, but they are not synonymous with the term "diet." Negative risk factors are also important to consider but are not specific to the concept of a person's diet.

Question 15

Yamiche is a biochemist with a company that manufacturers substances that can be added to foods to improve their flavor. She's discovered a chemical that she called "Agent X" in beet juice. Agent X prevents human cell membranes from being damaged by highly unstable substances that are in the environment. Based on this information, Agent X is a(an) ____.

Accepted Answer

Based on the information given, Agent X is an antioxidant because it prevents damage to human cell membranes caused by unstable substances in the environment, which is a key function of antioxidants.

Question 16

A serving of food contains 15 g carbohydrate, 2 g protein, 4 ounces of water, 5 g fat, 25 mcg vitamin A, 2.5 mg niacin, and 0.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Accepted Answer

To calculate the total kcal, use the macronutrient values: Carbohydrates (4 kcal/g) and proteins (4 kcal/g) contribute 15g * 4kcal/g = 60 kcal and 2g * 4kcal/g = 8 kcal, respectively. Fats (9 kcal/g) contribute 5g * 9kcal/g = 45 kcal. Adding these together, 60 kcal + 8 kcal + 45 kcal = 113 kcal. Vitamins and minerals do not contribute calories.

Question 17

Which of the following substances is a phytochemical?

Accepted Answer

Phytochemicals are plant-based compounds that have health benefits, and caffeine is a phytochemical found in coffee and tea. Vitamin D, Iron, and Cholesterol are not phytochemicals, as they are not derived from plants.

Question 18

A serving of food contains 15 g carbohydrate, 3 g protein, 5 g fat, 5 mg vitamin C, and 4 ounces of water. Based on this information, a serving of this food supplies ____ kcal.

Accepted Answer

The answer of A serving of food contains 15 g...

Question 19

Which of the following foods is a source of phytochemicals?

Accepted Answer

Fresh blueberries are a source of phytochemicals, which are naturally-occurring compounds found in plant-based foods that may have health benefits. Raw egg whites, fat-free milk, and lean meat do not contain significant amounts of phytochemicals.

Question 20

Tamika's 52-year-old father died as a result of a condition that is the leading cause of death in the United States. Based on this information, Tamika's father died from

Accepted Answer

According to the Centers for Disease Control and Prevention (CDC), heart disease is the leading cause of death in the United States, accounting for about 1 in every 4 deaths.

Quiz 1: Food Is More Than Something to Eat

Metabolism is

A serving of food contains 36 g carbohydrate, 4 g protein, 4 ounces of water, 10 g fat, 25 mg vitamin B-6, 1.2 mg zinc, and 1.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

A serving of food contains 20 g carbohydrate, 6 g protein, 10 g fat, 5 mg vitamin C, and 3 ounces of water. Based on this information, a serving of this food supplies ____ kcal.

According to numerous scientific studies, low levels of physical activity are associated with increased chances of developing excess body fat and type 2 diabetes. Based on this information, lack of physical activity is a

Which of the following conditions is a leading cause of death in the United States that's related to dietary practices?

Which of the following behaviors is a risk factor for heart disease?

Which of the following substances is a nutrient that doesn't provide any energy for the human body?

Which of the following substances is a nutrient that doesn't provide any energy for the human body?

Which of the following substances is a nutrient that doesn't supply any energy for the human body?

A serving of food contains 25 g carbohydrate, 10 g protein, 8 g fat, 5 mg vitamin iron, and 4 ounces of water. Based on this information, a serving of this food supplies ___kcal.

Which of the following nutrients is a source of energy?

Which of the following foods is naturally a rich source of phytochemicals?

A serving of food contains 24 g carbohydrate, 10 g protein, 3 ounces of water, 6 g fat, 25 mg vitamin B-12, and 1.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Diet refers to a person's

A serving of food contains 15 g carbohydrate, 2 g protein, 4 ounces of water, 5 g fat, 25 mcg vitamin A, 2.5 mg niacin, and 0.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Which of the following substances is a phytochemical?

A serving of food contains 15 g carbohydrate, 3 g protein, 5 g fat, 5 mg vitamin C, and 4 ounces of water. Based on this information, a serving of this food supplies ____ kcal.

Which of the following foods is a source of phytochemicals?

Tamika's 52-year-old father died as a result of a condition that is the leading cause of death in the United States. Based on this information, Tamika's father died from