[SCI 220 WEEK 3] COMPLETE EXAM QUESTIONS AND
VERIFIED ANSWERS | 2026–2027 LATEST UPDATE |
DETAILED RATIONALES | FULL STUDY GUIDE |
EXAM PREP | PRACTICE TEST | COURSE
ASSESSMENT PREPARATION
TABLE OF CONTENTS
1. Exam Overview
2. Study Guide Highlights
3. Practice Questions
4. Answer Key and Rationales
EXAM OVERVIEW
This Study Guide is designed to support students preparing for the SCI 220 Week 3 Course
Assessment. The assessment evaluates understanding of digestive system structure and function,
nutrient digestion and absorption, gastrointestinal health, enzyme activity, and practical nutrition
concepts. Students are expected to demonstrate application of scientific principles, critical
thinking, and the ability to evaluate nutrition-related scenarios.
Recommended Preparation Strategy:
• Review digestive system anatomy and physiology
• Understand the functions of major digestive organs
• Master nutrient digestion and absorption processes
• Practice applying concepts to real-world situations
• Use the Practice Test to identify strengths and knowledge gaps
STUDY GUIDE HIGHLIGHTS
• Realistic Exam Questions
• Verified Answers
• Detailed Rationales
• Scenario-Based Learning
• Critical Thinking Development
,• Practical Application of Concepts
• Latest Course Coverage
• Practice Test Experience
• Knowledge Reinforcement Techniques
TOTAL QUESTION COUNT: 40
PRACTICE QUESTIONS
1. Which organ is primarily responsible for the absorption of most nutrients?
A. Stomach
B. Large intestine
C. Small intestine
D. Esophagus
Correct Answer: C. Small intestine
Rationale: The small intestine contains villi and microvilli that greatly increase surface area
for nutrient absorption. Most digestion and absorption occur in this organ.
2. Which digestive enzyme begins carbohydrate digestion?
A. Pepsin
B. Salivary amylase
C. Lipase
D. Trypsin
Correct Answer: B. Salivary amylase
Rationale: Salivary amylase initiates the breakdown of starches in the mouth before food
reaches the stomach.
3. A patient experiences difficulty absorbing fats. Which organ may be functioning
improperly?
A. Pancreas
, B. Esophagus
C. Appendix
D. Pharynx
Correct Answer: A. Pancreas
Rationale: The pancreas secretes lipase, the enzyme primarily responsible for fat digestion.
Reduced pancreatic function may impair fat absorption.
4. What is the primary function of the stomach?
A. Absorb vitamins
B. Store bile
C. Begin protein digestion
D. Produce insulin
Correct Answer: C. Begin protein digestion
Rationale: The stomach secretes hydrochloric acid and pepsin, which initiate protein
digestion.
5. Which structure prevents food from entering the airway during swallowing?
A. Villi
B. Epiglottis
C. Pyloric sphincter
D. Ileum
Correct Answer: B. Epiglottis
Rationale: The epiglottis closes over the trachea during swallowing to prevent aspiration.
6. Which nutrient provides the highest amount of energy per gram?
A. Protein
B. Carbohydrate
VERIFIED ANSWERS | 2026–2027 LATEST UPDATE |
DETAILED RATIONALES | FULL STUDY GUIDE |
EXAM PREP | PRACTICE TEST | COURSE
ASSESSMENT PREPARATION
TABLE OF CONTENTS
1. Exam Overview
2. Study Guide Highlights
3. Practice Questions
4. Answer Key and Rationales
EXAM OVERVIEW
This Study Guide is designed to support students preparing for the SCI 220 Week 3 Course
Assessment. The assessment evaluates understanding of digestive system structure and function,
nutrient digestion and absorption, gastrointestinal health, enzyme activity, and practical nutrition
concepts. Students are expected to demonstrate application of scientific principles, critical
thinking, and the ability to evaluate nutrition-related scenarios.
Recommended Preparation Strategy:
• Review digestive system anatomy and physiology
• Understand the functions of major digestive organs
• Master nutrient digestion and absorption processes
• Practice applying concepts to real-world situations
• Use the Practice Test to identify strengths and knowledge gaps
STUDY GUIDE HIGHLIGHTS
• Realistic Exam Questions
• Verified Answers
• Detailed Rationales
• Scenario-Based Learning
• Critical Thinking Development
,• Practical Application of Concepts
• Latest Course Coverage
• Practice Test Experience
• Knowledge Reinforcement Techniques
TOTAL QUESTION COUNT: 40
PRACTICE QUESTIONS
1. Which organ is primarily responsible for the absorption of most nutrients?
A. Stomach
B. Large intestine
C. Small intestine
D. Esophagus
Correct Answer: C. Small intestine
Rationale: The small intestine contains villi and microvilli that greatly increase surface area
for nutrient absorption. Most digestion and absorption occur in this organ.
2. Which digestive enzyme begins carbohydrate digestion?
A. Pepsin
B. Salivary amylase
C. Lipase
D. Trypsin
Correct Answer: B. Salivary amylase
Rationale: Salivary amylase initiates the breakdown of starches in the mouth before food
reaches the stomach.
3. A patient experiences difficulty absorbing fats. Which organ may be functioning
improperly?
A. Pancreas
, B. Esophagus
C. Appendix
D. Pharynx
Correct Answer: A. Pancreas
Rationale: The pancreas secretes lipase, the enzyme primarily responsible for fat digestion.
Reduced pancreatic function may impair fat absorption.
4. What is the primary function of the stomach?
A. Absorb vitamins
B. Store bile
C. Begin protein digestion
D. Produce insulin
Correct Answer: C. Begin protein digestion
Rationale: The stomach secretes hydrochloric acid and pepsin, which initiate protein
digestion.
5. Which structure prevents food from entering the airway during swallowing?
A. Villi
B. Epiglottis
C. Pyloric sphincter
D. Ileum
Correct Answer: B. Epiglottis
Rationale: The epiglottis closes over the trachea during swallowing to prevent aspiration.
6. Which nutrient provides the highest amount of energy per gram?
A. Protein
B. Carbohydrate
