Question 1

What purpose do villi and microvilli serve in the small intestine?

Accepted Answer

The mucosa of the small intestine has villi and microvilli as adaptations to greatly increase surface area for absorption.

Question 2

How are the gastric glands in the stomach protected from digestion by the enzyme they produce?

Accepted Answer

The chief cells in the gastric glands produce the inactive form of the enzyme called pepsinogen. The pepsinogen does not become active, in the form of pepsin, until it encounters hydrochloric acid in the stomach. At this stage, the mucus lining of the stomach protects it from enzymatic action.

Question 3

Which condition can be a result of a deficiency of vitamin C?

Accepted Answer

A)  rickets 
B)  scurvy 
C)  beriberi 
D)  night blindness 
A)  rickets 
B)  scurvy 
C)  beriberi 
D)  night blindness B

Question 4

Which two structures of the human digestive tract can be classified as endocrine glands because they produce hormones?

Accepted Answer

A)  the liver and small intestine 
B)  the pancreas and small intestine 
C)  the pancreas and stomach 
D)  the liver and pancreas 
A)  the liver and small intestine 
B)  the pancreas and small intestine 
C)  the pancreas and stomach 
D)  the liver and pancreas

Question 5

Use the list of terms to identify each lettered item in the diagram of the digestive system.  
-salivary glands

Accepted Answer

The answer of Use the list of terms to identify...

Question 6

Which of the following may result in muscular weakness?

Accepted Answer

A)  deficiencies in phosphorus and calcium 
B)  deficiencies in iodine and iron 
C)  deficiencies in iron and manganese 
D)  deficiencies in phosphorus and potassium 
A)  deficiencies in phosphorus and calcium 
B)  deficiencies in iodine and iron 
C)  deficiencies in iron and manganese 
D)  deficiencies in phosphorus and potassium

Question 7

Which sequence presents the five steps of digestion in an upper-level animal in the proper order?

Accepted Answer

A)  mechanical processing, secretion of enzymes, absorption, enzymatic hydrolysis, elimination 
B)  mechanical processing, absorption, secretion of enzymes, enzymatic hydrolysis, elimination 
C)  mechanical processing, secretion of enzymes, enzymatic hydrolysis, absorption, elimination 
D)  absorption, enzymatic hydrolysis, mechanical processing, secretion of enzymes, elimination 
A)  mechanical processing, secretion of enzymes, absorption, enzymatic hydrolysis, elimination 
B)  mechanical processing, absorption, secretion of enzymes, enzymatic hydrolysis, elimination 
C)  mechanical processing, secretion of enzymes, enzymatic hydrolysis, absorption, elimination 
D)  absorption, enzymatic hydrolysis, mechanical processing, secretion of enzymes, elimination

Question 8

Match each digestive substance to the structure that produces it. A structure may be used more than onc
-carboxypeptidase

Accepted Answer

A) liver 
B) pancreas 
C) small intestine 
D) stomach 
A) liver 
B) pancreas 
C) small intestine 
D) stomach

Question 9

Which of the following do some nudibranchs have in their body?

Accepted Answer

A)  tonoplasts 
B)  teeth 
C)  chloroplasts 
D)  chromoplasts 
A)  tonoplasts 
B)  teeth 
C)  chloroplasts 
D)  chromoplasts

Question 10

Where does most absorption in the human body take place?

Accepted Answer

A)  in the liver 
B)  in the stomach 
C)  in the small intestine 
D)  in the large intestine 
A)  in the liver 
B)  in the stomach 
C)  in the small intestine 
D)  in the large intestine

Question 11

Which of these groups consume animals?

Accepted Answer

A)  herbivores only 
B)  omnivores and herbivores 
C)  carnivores and omnivores 
D)  carnivores only 
A)  herbivores only 
B)  omnivores and herbivores 
C)  carnivores and omnivores 
D)  carnivores only

Question 12

Use the list of terms to identify each lettered item in the diagram of the digestive system.  
-esophagus

Accepted Answer

The answer of Use the list of terms to identify...

Question 13

What is the primary function of the large intestine?

Accepted Answer

A)  to absorb water 
B)  to complete the digestion of fats 
C)  to complete the digestion of protein 
D)  to absorb nutrients 
A)  to absorb water 
B)  to complete the digestion of fats 
C)  to complete the digestion of protein 
D)  to absorb nutrients

Question 14

Describe the enzymatic digestion that takes place in each structure of the digestive tract.

Accepted Answer

Enzymatic digestion in humans starts in

Question 15

When fat enters the duodenum, which hormone is stimulated to be released?

Accepted Answer

A)  amylase 
B)  secretin 
C)  gastrin 
D)  cholecystokinin 
A)  amylase 
B)  secretin 
C)  gastrin 
D)  cholecystokinin

Question 16

Which of the following is an example of a suspension feeder?

Accepted Answer

A)  a whale 
B)  a mosquito 
C)  a snake 
D)  a lamprey 
A)  a whale 
B)  a mosquito 
C)  a snake 
D)  a lamprey

Question 17

Which pair includes animals that are both classified as suspension feeders?

Accepted Answer

A)  lampreys and rabbits 
B)  whales and clams 
C)  clams and aphids 
D)  aphids and whales 
A)  lampreys and rabbits 
B)  whales and clams 
C)  clams and aphids 
D)  aphids and whales

Question 18

Which process in the human digestive system best illustrates mechanical digestion?

Accepted Answer

A)  absorption 
B)  chewing 
C)  pepsin activity 
D)  amylase activity 
A)  absorption 
B)  chewing 
C)  pepsin activity 
D)  amylase activity

Question 19

Humans require 13 known vitamins in their diet.

Accepted Answer

A) True 
 B)False

Question 20

Where is the pancreas located?

Accepted Answer

A)  between the liver and the small intestine 
B)  between the stomach and the small intestine 
C)  between the stomach and the liver 
D)  between the gallbladder and the liver 
A)  between the liver and the small intestine 
B)  between the stomach and the small intestine 
C)  between the stomach and the liver 
D)  between the gallbladder and the liver

Exam 39: Animal Nutrition

What purpose do villi and microvilli serve in the small intestine?

How are the gastric glands in the stomach protected from digestion by the enzyme they produce?

Which condition can be a result of a deficiency of vitamin C?

Which two structures of the human digestive tract can be classified as endocrine glands because they produce hormones?

Use the list of terms to identify each lettered item in the diagram of the digestive system. -salivary glands

Which of the following may result in muscular weakness?

Which sequence presents the five steps of digestion in an upper-level animal in the proper order?

Match each digestive substance to the structure that produces it. A structure may be used more than onc -carboxypeptidase

Which of the following do some nudibranchs have in their body?

Where does most absorption in the human body take place?

Which of these groups consume animals?

Use the list of terms to identify each lettered item in the diagram of the digestive system. -esophagus

What is the primary function of the large intestine?

Describe the enzymatic digestion that takes place in each structure of the digestive tract.

When fat enters the duodenum, which hormone is stimulated to be released?

Which of the following is an example of a suspension feeder?

Which pair includes animals that are both classified as suspension feeders?

Which process in the human digestive system best illustrates mechanical digestion?

Humans require 13 known vitamins in their diet.

Where is the pancreas located?

Light and Life

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Regulation of Gene Expression

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

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