$$\text{Carrier} + \text{Nutrient} + \text{ATP} \rightarrow \text{Carrier-Nutrient Complex} + \text{ADP} + \text{P}_i$$

Question 1

Which of the following is NOT a primary function of the liver in human nutrition?

Accepted Answer

Absorption of nutrients into the bloodstream

Question 2

Which structural feature of the small intestine most increases its surface area for absorption?

Accepted Answer

Circular folds, villi, and microvilli

Question 3

Which type of absorption in the small intestine requires both a carrier protein and energy in the form of ATP?

Accepted Answer

Active transport

Question 4

A patient presents with burning chest pain after meals, but no damage to the esophageal lining is observed. Which condition is most likely?

Accepted Answer

Heartburn

Question 5

Which of the following nutrition-related recommendations is most appropriate for a patient with GERD?

Accepted Answer

Elevate the head of the bed during sleep

Question 6

Which of the following is a common cause of peptic ulcers?

Accepted Answer

Helicobacter pylori infection

Question 7

Which of the following best describes the difference between a food intolerance and a food allergy?

Accepted Answer

Food allergy involves the immune system, while food intolerance does not

Question 8

A person experiences bloating and diarrhea after consuming milk, but tests negative for an immune response. What is the most likely explanation?

Accepted Answer

Lactose intolerance

Question 9

Which of the following symptoms is most characteristic of a food allergy rather than a food intolerance?

Accepted Answer

Hives and anaphylaxis

Question 10

Which of the following statements about gluten is correct?

Accepted Answer

Gluten is composed of gliadin and glutenin

Question 11

A patient with celiac disease consumes gluten. Which of the following is a likely symptom?

Accepted Answer

Intestinal villi atrophy

Question 12

Which test is most definitive for diagnosing celiac disease?

Accepted Answer

Blood test for anti-tTG antibodies followed by intestinal biopsy

Question 13

Which of the following is the most effective treatment for celiac disease?

Accepted Answer

Strict gluten-free diet

Question 14

Which of the following best describes the role of peristalsis in the GI tract?

Accepted Answer

Rhythmic contractions that propel food forward

Question 15

A food product label states: 'Contains wheat, soy, and milk.' According to the Nutrition Facts Label regulations, why is this information important?

Accepted Answer

It identifies common allergens for sensitive individuals

Question 16

A patient with a history of peptic ulcers is advised to avoid NSAIDs. What is the rationale for this recommendation?

Accepted Answer

NSAIDs can damage the stomach lining and worsen ulcers

Question 17

Which of the following equations best represents the process of active transport in nutrient absorption?

Accepted Answer

$$	ext{Carrier} + 	ext{Nutrient} + 	ext{ATP} ightarrow 	ext{Carrier-Nutrient Complex} + 	ext{ADP} + 	ext{P}_i$$

Question 18

A 25-year-old experiences hives, swelling, and difficulty breathing within minutes of eating peanuts. Which mechanism is most likely responsible?

Accepted Answer

Immune-mediated IgE response

Question 19

Which of the following is a plausible reason why a person with celiac disease might still experience symptoms on a gluten-free diet?

Accepted Answer

Cross-contamination with gluten-containing foods

Question 20

Which of the following best explains why a person with lactose intolerance can sometimes tolerate small amounts of dairy?

Accepted Answer

Some individuals retain partial lactase enzyme activity

Digestive System, Food Allergies, and Intolerances: Key Concepts in Nutrition

Study Guide - Practice Questions