[STUDY GUIDE] • HIGH-YIELD PRACTICE & REVIEW EDITION
Essentials in Nutrition BIOD 121 Portage
Learning Module 3 Exam Questions &
Verified Rationalized Answers, Updated
2026/2027 Edition
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
232 Questions 12 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 232 verified questions with correct answers and detailed rationales covering essential
concepts in nutrition science. It is suitable for enhancing knowledge in dietary requirements, macronutrients,
and metabolic processes, making it ideal for study, review, and certification preparation.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus
Explores the role of proteins in the body, including their structure, function, and dietary
Protein Metabolism sources.
Dietary Fiber Examines the types, benefits, and recommended intake of dietary fiber in human nutrition.
Amino Acids Covers the significance of amino acids in protein synthesis and their classification.
Daily Recommended Intake Discusses guidelines for nutrient intake to maintain optimal health and prevent deficiencies.
Fatty Acids Details the types of fatty acids, their health implications, and dietary sources.
Metabolic Reactions Analyzes anabolic and catabolic reactions and their roles in metabolism.
Gastric Functions Explores gastric emptying time and its impact on digestion and nutrient absorption.
Nutrient Transport Examines how nutrients are absorbed and transported throughout the body.
Vitamins and Minerals Covers the essential roles, sources, and recommended intakes of vitamins and minerals.
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 57
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Discusses the relationship between nutrition and various health risks, such as heart disease
Health Risks and Nutrition and obesity.
Food Allergies Explores the mechanisms and management of food allergies and intolerances.
Carbohydrate Metabolism Examines the role of carbohydrates as an energy source and their metabolic pathways.
Total Exam Coverage 12 Integrated Topic Modules • 232 Examination Questions
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 57
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 1
Protein that catalyze metabolic reactions, and are necessary for most biochemical
reactions to occur.
Correct Answer: Enzyme
Rationale: This answer is correct because enzymes play a crucial role in facilitating biochemical reactions by lowering the
activation energy required for the reaction to occur, allowing metabolic processes to proceed efficiently. The essential
function of enzymes in catalyzing various metabolic reactions is a fundamental concept in biochemistry, highlighting their
vital necessity in biological systems.
QUESTION 2
Digestive enzymes specifically break down food substances. Examples include:
________ for carbohydrate ________ for protein, and ________ for Lipids/Fat.
Correct Answer: - amylase
- protease
- lipase
Rationale: Amylase breaks down carbohydrates because it specifically targets the glycosidic bonds that hold glucose
molecules together, facilitating their digestion. Similarly, protease and lipase break down protein and lipids/fat respectively
due to their unique enzymatic properties that enable them to target and cleave peptide and triglyceride bonds.
QUESTION 3
Chemicals produced by cells (typically in an endocrine gland), and are secreted, then
affect the behavior of cells at distal sites in the body.
Correct Answer: Hormones
Rationale: This definition correctly identifies hormones because it highlights their unique characteristic of being produced
and secreted by cells, such as those in endocrine glands, before exerting a specific effect on other cells in the body at a
distant location. This distinction from other signaling molecules emphasizes the specific role of hormones in regulating and
coordinating bodily functions through their ability to influence cells at distal sites.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 57
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 4
Examples of hormones in digestion include: _________ and __________.
Correct Answer: Cholecystokinin, secretin.
Rationale: Cholecystokinin and secretin are correctly identified as examples of hormones in digestion because they are
both released by the duodenum in response to food, specifically fats and proteins, to stimulate the release of digestive
enzymes and bile from the pancreas and gallbladder, respectively. By controlling these processes, cholecystokinin and
secretin play crucial roles in the breakdown and absorption of nutrients during digestion.
QUESTION 5
A muscular wave action that occurs throughout the intestinal tract. It is controlled by
the central nervous system and facilitates excretion by propelling food stuff through
the body.
Correct Answer: Peristalsis
Rationale: The correct answer is supported by the fact that peristalsis involves a coordinated contraction and relaxation of
intestinal muscles, which aligns with the description of a "muscular wave action" that facilitates the movement of food
through the body. This process is indeed controlled by the central nervous system, which enables the body to regulate and
coordinate this movement for proper digestion and excretion.
QUESTION 6
What are the 3 accessory organs.
Correct Answer: 1- Liver
2- Gallbladder
3- Pancreas
Rationale: The pancreas is not considered an accessory organ, but rather a chief organ, as it performs a primary function of
producing digestive enzymes and hormones like insulin. The accessory organs, by contrast, are those that assist in the
digestion and absorption of nutrients, such as the gallbladder, which stores bile, and the liver, which produces bile and helps
filter toxins from the blood.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 57
Essentials in Nutrition BIOD 121 Portage
Learning Module 3 Exam Questions &
Verified Rationalized Answers, Updated
2026/2027 Edition
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
232 Questions 12 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 232 verified questions with correct answers and detailed rationales covering essential
concepts in nutrition science. It is suitable for enhancing knowledge in dietary requirements, macronutrients,
and metabolic processes, making it ideal for study, review, and certification preparation.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus
Explores the role of proteins in the body, including their structure, function, and dietary
Protein Metabolism sources.
Dietary Fiber Examines the types, benefits, and recommended intake of dietary fiber in human nutrition.
Amino Acids Covers the significance of amino acids in protein synthesis and their classification.
Daily Recommended Intake Discusses guidelines for nutrient intake to maintain optimal health and prevent deficiencies.
Fatty Acids Details the types of fatty acids, their health implications, and dietary sources.
Metabolic Reactions Analyzes anabolic and catabolic reactions and their roles in metabolism.
Gastric Functions Explores gastric emptying time and its impact on digestion and nutrient absorption.
Nutrient Transport Examines how nutrients are absorbed and transported throughout the body.
Vitamins and Minerals Covers the essential roles, sources, and recommended intakes of vitamins and minerals.
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 57
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Discusses the relationship between nutrition and various health risks, such as heart disease
Health Risks and Nutrition and obesity.
Food Allergies Explores the mechanisms and management of food allergies and intolerances.
Carbohydrate Metabolism Examines the role of carbohydrates as an energy source and their metabolic pathways.
Total Exam Coverage 12 Integrated Topic Modules • 232 Examination Questions
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 57
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 1
Protein that catalyze metabolic reactions, and are necessary for most biochemical
reactions to occur.
Correct Answer: Enzyme
Rationale: This answer is correct because enzymes play a crucial role in facilitating biochemical reactions by lowering the
activation energy required for the reaction to occur, allowing metabolic processes to proceed efficiently. The essential
function of enzymes in catalyzing various metabolic reactions is a fundamental concept in biochemistry, highlighting their
vital necessity in biological systems.
QUESTION 2
Digestive enzymes specifically break down food substances. Examples include:
________ for carbohydrate ________ for protein, and ________ for Lipids/Fat.
Correct Answer: - amylase
- protease
- lipase
Rationale: Amylase breaks down carbohydrates because it specifically targets the glycosidic bonds that hold glucose
molecules together, facilitating their digestion. Similarly, protease and lipase break down protein and lipids/fat respectively
due to their unique enzymatic properties that enable them to target and cleave peptide and triglyceride bonds.
QUESTION 3
Chemicals produced by cells (typically in an endocrine gland), and are secreted, then
affect the behavior of cells at distal sites in the body.
Correct Answer: Hormones
Rationale: This definition correctly identifies hormones because it highlights their unique characteristic of being produced
and secreted by cells, such as those in endocrine glands, before exerting a specific effect on other cells in the body at a
distant location. This distinction from other signaling molecules emphasizes the specific role of hormones in regulating and
coordinating bodily functions through their ability to influence cells at distal sites.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 57
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 4
Examples of hormones in digestion include: _________ and __________.
Correct Answer: Cholecystokinin, secretin.
Rationale: Cholecystokinin and secretin are correctly identified as examples of hormones in digestion because they are
both released by the duodenum in response to food, specifically fats and proteins, to stimulate the release of digestive
enzymes and bile from the pancreas and gallbladder, respectively. By controlling these processes, cholecystokinin and
secretin play crucial roles in the breakdown and absorption of nutrients during digestion.
QUESTION 5
A muscular wave action that occurs throughout the intestinal tract. It is controlled by
the central nervous system and facilitates excretion by propelling food stuff through
the body.
Correct Answer: Peristalsis
Rationale: The correct answer is supported by the fact that peristalsis involves a coordinated contraction and relaxation of
intestinal muscles, which aligns with the description of a "muscular wave action" that facilitates the movement of food
through the body. This process is indeed controlled by the central nervous system, which enables the body to regulate and
coordinate this movement for proper digestion and excretion.
QUESTION 6
What are the 3 accessory organs.
Correct Answer: 1- Liver
2- Gallbladder
3- Pancreas
Rationale: The pancreas is not considered an accessory organ, but rather a chief organ, as it performs a primary function of
producing digestive enzymes and hormones like insulin. The accessory organs, by contrast, are those that assist in the
digestion and absorption of nutrients, such as the gallbladder, which stores bile, and the liver, which produces bile and helps
filter toxins from the blood.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 57
