Question 1

Which of the following best describes the difference between a carnivore and an omnivore in terms of their digestive system adaptations?

Accepted Answer

Omnivores have a more generalized dentition and intermediate-length intestines, while carnivores have sharp teeth and shorter intestines.

Question 2

A person who consumes a diet lacking in lysine and tryptophan is most likely to develop which condition?

Accepted Answer

Kwashiorkor (protein deficiency malnutrition)

Question 3

Which of the following is NOT considered an essential nutrient for humans?

Accepted Answer

Glucose

Question 4

Which equation best represents the enzymatic hydrolysis of a peptide bond during protein digestion?

Accepted Answer

$$\mathrm{Protein} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{Amino\ acids}$$

Question 5

A patient has a genetic defect that prevents the production of bile. Which nutrient will be most poorly absorbed?

Accepted Answer

Fat-soluble vitamins (e.g., vitamin A, D, E, K)

Question 6

Which of the following best explains why most plant proteins are considered 'incomplete' for humans?

Accepted Answer

They are missing one or more essential amino acids.

Question 7

Which process is responsible for moving food through the esophagus to the stomach?

Accepted Answer

Peristalsis

Question 8

A person with a deficiency in vitamin K would most likely experience which of the following symptoms?

Accepted Answer

Impaired blood clotting

Question 9

Which of the following statements about the absorption of fats in the small intestine is correct?

Accepted Answer

Chylomicrons are transported into lacteals, which are part of the lymphatic system.

Question 10

Which hormone is produced by fat cells and acts as an appetite suppressant in the regulation of body weight?

Accepted Answer

Leptin

Question 11

A person who is undernourished will first use up which energy reserve?

Accepted Answer

Stored fat and carbohydrates

Question 12

Which of the following best describes the function of the hepatic portal vein?

Accepted Answer

It transports absorbed nutrients from the small intestine to the liver for processing.

Question 13

Which of the following is a correct sequence of the four main stages of food processing in animals?

Accepted Answer

Ingestion → Digestion → Absorption → Elimination

Question 14

Which of the following adaptations is most likely found in a ruminant herbivore but not in a carnivore?

Accepted Answer

A fermentation chamber containing symbiotic microorganisms

Question 15

Which of the following best explains why vitamin C deficiency leads to scurvy?

Accepted Answer

Vitamin C is necessary for collagen synthesis, and its absence weakens connective tissues.

Question 16

Which of the following is a real-life example of a bulk feeder?

Accepted Answer

A python swallowing a deer whole

Question 17

Which of the following best describes the role of the pancreas in digestion?

Accepted Answer

It produces digestive enzymes and bicarbonate to neutralize stomach acid.

Question 18

A person who eats only corn as a staple food is at risk for which nutritional deficiency?

Accepted Answer

Protein deficiency due to lack of lysine and tryptophan

Question 19

Which of the following statements about vitamins is correct?

Accepted Answer

Vitamins are organic molecules required in small amounts for metabolism.

Question 20

Which of the following best describes the function of villi and microvilli in the small intestine?

Accepted Answer

They increase the surface area for nutrient absorption.

Animal Nutrition and Digestive Systems: Study Guide

Study Guide - Practice Questions