Question 1

What is the usual pH of stomach acids?

Accepted Answer

A) 2 
B) 7 
C) 10 
D) 12 
A) 2 
B) 7 
C) 10 
D) 12 A

Question 2

Which of the following is major shortcoming of swimming in South American waters inhabited by candirus?

Accepted Answer

A) Their behaviour to lead into the urethra of an animal urinating while submerged in water. 
B) Their behaviour to lead into the anus of an animal while submerged in water. 
C) Their behaviour to lead into the nose of an animal while swimming in water. 
D) Their behaviour to lead into the ears of an animal while swimming in water. 
A) Their behaviour to lead into the urethra of an animal urinating while submerged in water. 
B) Their behaviour to lead into the anus of an animal while submerged in water. 
C) Their behaviour to lead into the nose of an animal while swimming in water. 
D) Their behaviour to lead into the ears of an animal while swimming in water. A

Question 3

Why is a digestive system with a single digestive opening inefficient?

Accepted Answer

Because nutrients enter and wastes exit through the same opening, wastes may be taken into the animal's body only to be expelled again.

Question 4

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

Accepted Answer

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

Question 5

Which layer of the mammalian digestive tract directly contacts the lumen?

Accepted Answer

A) the mucosa 
B) the submucosa 
C) the muscularis 
D) the serosa 
A) the mucosa 
B) the submucosa 
C) the muscularis 
D) the serosa

Question 6

In the human diet, linoleic acid and linolenic acid are the only essential fatty acids.

Accepted Answer

A) True 
 B)False

Question 7

Which structure in the human body regulates hunger and a sense of fullness?

Accepted Answer

A) the pancreas 
B) the hypothalamus 
C) the small intestine 
D) the stomach 
A) the pancreas 
B) the hypothalamus 
C) the small intestine 
D) the stomach

Question 8

Which of the following may result in anemia?

Accepted Answer

A) a deficiency of iron 
B) a deficiency of iodine 
C) a deficiency of chlorine 
D) a deficiency of calcium 
A) a deficiency of iron 
B) a deficiency of iodine 
C) a deficiency of chlorine 
D) a deficiency of calcium

Question 9

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

Accepted Answer

The mucosa of the small intest

Question 10

Which layer of the mammalian gut performs peristalsis?

Accepted Answer

A) the lamina 
B) the mucosa 
C) the muscularis 
D) the submucosa 
A) the lamina 
B) the mucosa 
C) the muscularis 
D) the submucosa

Question 11

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

Accepted Answer

Enzymatic digestion in humans starts in

Question 12

In what way are tapeworms and beardworms similar to each other?

Accepted Answer

A) They are both gutless. 
B) They both have long guts. 
C) They both have guts shorter than usual. 
D) They both have guts longer than usual. 
A) They are both gutless. 
B) They both have long guts. 
C) They both have guts shorter than usual. 
D) They both have guts longer than usual.

Question 13

What is the dual function of the gastrovascular cavity in a flatworm?

Accepted Answer

A) circulatory and respiratory 
B) respiratory and reproductive 
C) digestive and respiratory 
D) digestive and circulatory 
A) circulatory and respiratory 
B) respiratory and reproductive 
C) digestive and respiratory 
D) digestive and circulatory

Question 14

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 15

The mucosa of the digestive tract may have villi as an adaptation.

Accepted Answer

A) True 
 B)False

Question 16

Which vitamin can humans synthesize?

Accepted Answer

A) vitamin D 
B) vitamin C 
C) vitamin B 
D) vitamin A 
A) vitamin D 
B) vitamin C 
C) vitamin B 
D) vitamin A

Question 17

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

Accepted Answer

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

Question 18

Which veins join together to form the hepatic portal vein?

Accepted Answer

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

Question 19

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

Accepted Answer

A) liver 
B) pancreas 
C) salivary glands 
D) stomach 
A) liver 
B) pancreas 
C) salivary glands 
D) stomach

Question 20

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

Accepted Answer

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

Exam 48: Animal Nutrition

What is the usual pH of stomach acids?

Which of the following is major shortcoming of swimming in South American waters inhabited by candirus?

Why is a digestive system with a single digestive opening inefficient?

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

Which layer of the mammalian digestive tract directly contacts the lumen?

In the human diet, linoleic acid and linolenic acid are the only essential fatty acids.

Which structure in the human body regulates hunger and a sense of fullness?

Which of the following may result in anemia?

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

Which layer of the mammalian gut performs peristalsis?

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

In what way are tapeworms and beardworms similar to each other?

What is the dual function of the gastrovascular cavity in a flatworm?

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

The mucosa of the digestive tract may have villi as an adaptation.

Which vitamin can humans synthesize?

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

Which veins join together to form the hepatic portal vein?

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

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

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

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

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

Filters