ESTUDYR
PORTAGE NUTRITION BIOD 121 EXAM 2
BIOD 121 Essentials in Nutrition – Final Exam 2 Review
Ideal for mastering key nutrition concepts
This exam contains:
Questions and Answers: A comprehensive set of exam questions with detailed answers.
100% Guarantee Pass: Verified and accurate content designed to ensure success.
Multiple-Choice Format (A–D): Each question offers four answer options for clarity and
practice.
Correct Answer Included: Highlighted correct answers for easy review.
Expert-Verified Explanations: Detailed, expert-reviewed explanations for every question to
enhance understanding.
,ESTUDYR
1. Which type of diffusion can move substances down concentration gradients utilizing a transporter?
A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Osmosis
Answer: B. Facilitated diffusion
Rationale: Facilitated diffusion requires a transporter protein to help move substances across a
membrane along their concentration gradient without the need for energy.
2. The esophagus serves as:
A. The site of absorption for nutrients
B. A passageway for food
C. A storage organ for food
D. A chemical digestion site
Answer: B. A passageway for food
Rationale: The esophagus is a muscular tube that transports food from the pharynx to the stomach.
3. The stomach's primary role includes:
A. Absorption of nutrients
B. Holding food and digesting it mechanically and chemically
C. Filtering toxins
D. Producing bile
Answer: B. Holding food and digesting it mechanically and chemically
Rationale: The stomach uses its muscular walls to mix food and gastric juices, while enzymes and acids
chemically break it down.
4. What is the main function of the small intestine?
A. Absorption of water
B. Secretion of bile
C. Digestion and absorption of nutrients
D. Storage of undigested food
, ESTUDYR
Answer: C. Digestion and absorption of nutrients
Rationale: The small intestine is the site where most digestion occurs, and nutrients are absorbed into
the bloodstream.
5. Which of the following best describes the large intestine?
A. Produces digestive enzymes
B. Stores bile
C. Reabsorbs water and some vitamins
D. Breaks down fats
Answer: C. Reabsorbs water and some vitamins
Rationale: The large intestine primarily absorbs water and certain vitamins, while also compacting
undigested material into feces.
6. The rectum functions to:
A. Absorb fats
B. Produce bile
C. Pass undigested foodstuffs from the body
D. Chemically digest food
Answer: C. Pass undigested foodstuffs from the body
Rationale: The rectum stores feces until they are expelled through defecation.
7. What is the primary role of salivary glands in digestion?
A. Neutralizing stomach acids
B. Releasing saliva containing enzymes
C. Breaking down fats
D. Absorbing nutrients
Answer: B. Releasing saliva containing enzymes
Rationale: Salivary glands secrete saliva, which contains amylase and other enzymes that initiate the
digestion of carbohydrates.
PORTAGE NUTRITION BIOD 121 EXAM 2
BIOD 121 Essentials in Nutrition – Final Exam 2 Review
Ideal for mastering key nutrition concepts
This exam contains:
Questions and Answers: A comprehensive set of exam questions with detailed answers.
100% Guarantee Pass: Verified and accurate content designed to ensure success.
Multiple-Choice Format (A–D): Each question offers four answer options for clarity and
practice.
Correct Answer Included: Highlighted correct answers for easy review.
Expert-Verified Explanations: Detailed, expert-reviewed explanations for every question to
enhance understanding.
,ESTUDYR
1. Which type of diffusion can move substances down concentration gradients utilizing a transporter?
A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Osmosis
Answer: B. Facilitated diffusion
Rationale: Facilitated diffusion requires a transporter protein to help move substances across a
membrane along their concentration gradient without the need for energy.
2. The esophagus serves as:
A. The site of absorption for nutrients
B. A passageway for food
C. A storage organ for food
D. A chemical digestion site
Answer: B. A passageway for food
Rationale: The esophagus is a muscular tube that transports food from the pharynx to the stomach.
3. The stomach's primary role includes:
A. Absorption of nutrients
B. Holding food and digesting it mechanically and chemically
C. Filtering toxins
D. Producing bile
Answer: B. Holding food and digesting it mechanically and chemically
Rationale: The stomach uses its muscular walls to mix food and gastric juices, while enzymes and acids
chemically break it down.
4. What is the main function of the small intestine?
A. Absorption of water
B. Secretion of bile
C. Digestion and absorption of nutrients
D. Storage of undigested food
, ESTUDYR
Answer: C. Digestion and absorption of nutrients
Rationale: The small intestine is the site where most digestion occurs, and nutrients are absorbed into
the bloodstream.
5. Which of the following best describes the large intestine?
A. Produces digestive enzymes
B. Stores bile
C. Reabsorbs water and some vitamins
D. Breaks down fats
Answer: C. Reabsorbs water and some vitamins
Rationale: The large intestine primarily absorbs water and certain vitamins, while also compacting
undigested material into feces.
6. The rectum functions to:
A. Absorb fats
B. Produce bile
C. Pass undigested foodstuffs from the body
D. Chemically digest food
Answer: C. Pass undigested foodstuffs from the body
Rationale: The rectum stores feces until they are expelled through defecation.
7. What is the primary role of salivary glands in digestion?
A. Neutralizing stomach acids
B. Releasing saliva containing enzymes
C. Breaking down fats
D. Absorbing nutrients
Answer: B. Releasing saliva containing enzymes
Rationale: Salivary glands secrete saliva, which contains amylase and other enzymes that initiate the
digestion of carbohydrates.
