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Essentials of Biology

Sylvia S. Mader, Michael Windelspecht

Chapter 25

Digestion and Human Nutrition - all with Video Answers

Educators

Chapter Questions

02:52

Problem 1

Label the components of the human digestive system in the following illustration.

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00:39

Problem 2

Pepsin
a. breaks down protein in the small intestine.
b. breaks down protein in the stomach.
c. is found in saliva.
d. breaks down fats in the stomach.

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01:10

Problem 3

Which of the following is not a function of the liver?
a. removal of poisonous substances from the blood
b. secretion of digestive juices
c. production of albumin
d. storage of glucose
e. production of bile

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00:46

Problem 4

Mechanical digestion occurs in the
a. mouth and stomach
b. large and small intestines
c. liver and small intestine
d. esophagus and small intestine

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00:51

Problem 5

The breakdown of nutrients for absorption occurs primarily in the
a. large intestine.
b. mouth.
c. stomach.
d. small intestine.

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01:04

Problem 6

Vitamins are considered
a. micronutrients because they are small in size.
b. micronutrients because they are needed in small quantities.
c. macronutrients because they are large in size.
d. macronutrients because they are needed in large quantities.

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01:12

Problem 7

A _______ is a component of food that performs a physiological function.
a. macromolecule
b. Calorie
c. nutrient
d. chemical

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01:13

Problem 8

The amino acids that must be consumed in the diet are called essential. Nonessential amino acids
a. can be produced by the body.
b. are needed only occasionally.
c. are stored in the body until needed.
d. can be taken in via supplements.

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01:09

Problem 9

Choose the class of nutrient from the key that matches the description. Each answer may be used more than once or not at all.
a. carbohydrates
b. lipids
c. proteins
d. minerals
e. vitamins
f. water.
preferred source of direct energy for cells

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00:48

Problem 10

Choose the class of nutrient from the key that matches the description. Each answer may be used more than once or not at all.
a. carbohydrates
b. lipids
c. proteins
d. minerals
e. vitamins
f. water.
constitutes the majority of human body mass

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01:04

Problem 11

Choose the class of nutrient from the key that matches the description. Each answer may be used more than once or not at all.
a. carbohydrates
b. lipids
c. proteins
d. minerals
e. vitamins
f. water.
include antioxidants

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00:58

Problem 12

Choose the class of nutrient from the key that matches the description. Each answer may be used more than once or not at all.
a. carbohydrates
b. lipids
c. proteins
d. minerals
e. vitamins
f. water.
an example is cholesterol

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01:03

Problem 13

Choose the class of nutrient from the key that matches the description. Each answer may be used more than once or not at all.
a. carbohydrates
b. lipids
c. proteins
d. minerals
e. vitamins
f. water.
includes calcium, phosphorus, and potassium

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00:49

Problem 14

Vitamins
a. are inorganic compounds necessary in the diet.
b. are needed in large quantities by the body and used as building blocks for body tissues.
c. are organic compounds, needed in small quantities by the body, that regulate metabolic activities.
d. can all be synthesized by the human body.

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00:56

Problem 15

A $\%$ daily value for sugar is not included in a nutrition label because
a. sugar is not a nutrient.
b. it is too difficult to determine the caloric value of sugar.
c. there is a daily value given for carbohydrates, but not for sugars.
d. sugar quality varies from product to product.

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01:04

Problem 16

Which of the following is correct regarding the $\%$ daily values on a food label?
a. They provide precise values for an individual's diet.
b. They are based on a 2,000 -Calorie-per-day diet.
c. They are provided for every nutrient on the food label.
d. They take serving size into consideration.

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00:42

Problem 17

The body mass index (BMI) is
a. a measure of height relative to weight to determine whether a person is overweight.
b. a measure of height relative to age to determine whether a person is of normal height.
c. relatively low if a person is overweight.
d. relatively high if a person is underweight.

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00:49

Problem 18

The body's inability to regulate blood glucose levels is a characteristic of
a. hypertension.
b. cancer.
c. cardiovascular disease.
d. diabetes.

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