Question 1

The natural production and absorption of many vitamins is regulated by negative feedback loops.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following statements about fat digestion is FALSE?

Accepted Answer

A)  Fat molecules are too large to cross the gut wall. 
B)  Fats dissolve poorly in the watery mass of food moving through the gut. 
C)  Fats are difficult to absorb. 
D)  Fats cannot be broken down into smaller molecules. 
A)  Fat molecules are too large to cross the gut wall. 
B)  Fats dissolve poorly in the watery mass of food moving through the gut. 
C)  Fats are difficult to absorb. 
D)  Fats cannot be broken down into smaller molecules.

Question 3

Pepsin helps digest

Accepted Answer

A)  proteins. 
B)  glucose. 
C)  amino acids. 
D)  fats. 
A)  proteins. 
B)  glucose. 
C)  amino acids. 
D)  fats.

Question 4

The colon contains bacteria that produce ________,a small organic compound that is involved in blood clotting.

Accepted Answer

The answer of The colon contains bacteria that produce ________,a...

Question 5

Because they are NOT soluble in water,fats are digested in a different way than proteins and carbohydrates.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following steps of digestion does NOT occur in the mouth?

Accepted Answer

A)  chemical breakdown by enzymes 
B)  mechanical breakdown 
C)  ingestion 
D)  absorption 
A)  chemical breakdown by enzymes 
B)  mechanical breakdown 
C)  ingestion 
D)  absorption

Question 7

The liver secretes bile to the

Accepted Answer

A)  pancreas. 
B)  small intestine. 
C)  gallbladder. 
D)  large intestine. 
A)  pancreas. 
B)  small intestine. 
C)  gallbladder. 
D)  large intestine.

Question 8

In mammals,the mechanical breakdown of food involves teeth.In worms,the mechanical breakdown is accomplished by a ________.

Accepted Answer

The answer of In mammals,the mechanical breakdown of food involves...

Question 9

Organisms need energy to carry out life processes,but they also must use energy simply to gather nutrients.Which of the following statements must be true in order for an organism to live?

Accepted Answer

A)  The amount of energy ingested in proteins must equal the amount of energy ingested in carbohydrates. 
B)  If the amount of energy used for life processes is low,the organism must ingest extra nutrients in order to produce body heat. 
C)  The amount of energy used to gather nutrients must be more than the amount of energy used to carry out life processes. 
D)  The amount of energy used for life processes,including nutrient gathering,must be less than the amount of energy captured from the environment. 
A)  The amount of energy ingested in proteins must equal the amount of energy ingested in carbohydrates. 
B)  If the amount of energy used for life processes is low,the organism must ingest extra nutrients in order to produce body heat. 
C)  The amount of energy used to gather nutrients must be more than the amount of energy used to carry out life processes. 
D)  The amount of energy used for life processes,including nutrient gathering,must be less than the amount of energy captured from the environment.

Question 10

Which of the following might be true of an omnivore?

Accepted Answer

A)  An omnivore probably has spiked teeth for tearing and flat teeth for grinding. 
B)  An omnivore probably has a very complex stomach with many different chambers for housing microorganisms that break down cellulose. 
C)  An omnivore probably has a very short intestine because all the foods it consumes are easily absorbed. 
D)  An omnivore probably produces the enzyme that breaks down cellulose and pepsin. 
A)  An omnivore probably has spiked teeth for tearing and flat teeth for grinding. 
B)  An omnivore probably has a very complex stomach with many different chambers for housing microorganisms that break down cellulose. 
C)  An omnivore probably has a very short intestine because all the foods it consumes are easily absorbed. 
D)  An omnivore probably produces the enzyme that breaks down cellulose and pepsin.

Question 11

The majority of adult humans CANNOT digest dairy products because

Accepted Answer

A)  food preservatives block the natural digestion of dairy in the digestive tract. 
B)  they do not carry the allele that allows continued production of lactase enzyme. 
C)  hormone fluctuations at puberty permanently inhibit certain digestive processes. 
D)  adults have less bacteria in their small intestines compared to infants. 
A)  food preservatives block the natural digestion of dairy in the digestive tract. 
B)  they do not carry the allele that allows continued production of lactase enzyme. 
C)  hormone fluctuations at puberty permanently inhibit certain digestive processes. 
D)  adults have less bacteria in their small intestines compared to infants.

Question 12

Prior to a sporting event,many competitors will ingest proteins for quick energy sources.

Accepted Answer

A) True 
 B)False

Question 13

Examine the photograph below of an animal skull.
   
The characteristics of this skull suggest that it belongs to a ________,the type of animal that consumes only ________.

Accepted Answer

The answer of Examine the photograph below of an animal...

Question 14

Vitamins are an essential source of energy.

Accepted Answer

A) True 
 B)False

Question 15

Vitamins are either water soluble or ________ soluble.

Accepted Answer

The answer of Vitamins are either water soluble or ________...

Question 16

There is evidence that omega-3 fatty acids promote heart health and may protect against depression.

Accepted Answer

A) True 
 B)False

Question 17

The images below are illustrating the ________ intestine lined with ________ in order to increase nutrient absorption.

Accepted Answer

A)  small;villi 
B)  large;villi 
C)  small;cilia 
D)  large;flagella 
A)  small;villi 
B)  large;villi 
C)  small;cilia 
D)  large;flagella

Question 18

Omnivores have

Accepted Answer

A)  flat front teeth. 
B)  sharp back teeth. 
C)  flat teeth throughout the mouth. 
D)  a combination of both sharp and flat teeth. 
A)  flat front teeth. 
B)  sharp back teeth. 
C)  flat teeth throughout the mouth. 
D)  a combination of both sharp and flat teeth.

Question 19

Adult males are more likely to be lactose intolerant than adult females.

Accepted Answer

A) True 
 B)False

Question 20

The brush border in the small intestine decreases the amount of surface area available for absorption of nutrients.

Accepted Answer

A) True 
 B)False

Exam 27: Nutrition and Digestion

The natural production and absorption of many vitamins is regulated by negative feedback loops.

Which of the following statements about fat digestion is FALSE?

Pepsin helps digest

The colon contains bacteria that produce ________,a small organic compound that is involved in blood clotting.

Because they are NOT soluble in water,fats are digested in a different way than proteins and carbohydrates.

Which of the following steps of digestion does NOT occur in the mouth?

The liver secretes bile to the

In mammals,the mechanical breakdown of food involves teeth.In worms,the mechanical breakdown is accomplished by a ________.

Organisms need energy to carry out life processes,but they also must use energy simply to gather nutrients.Which of the following statements must be true in order for an organism to live?

Which of the following might be true of an omnivore?

The majority of adult humans CANNOT digest dairy products because

Prior to a sporting event,many competitors will ingest proteins for quick energy sources.

Examine the photograph below of an animal skull. The characteristics of this skull suggest that it belongs to a ________,the type of animal that consumes only ________.

Vitamins are an essential source of energy.

Vitamins are either water soluble or ________ soluble.

There is evidence that omega-3 fatty acids promote heart health and may protect against depression.

The images below are illustrating the ________ intestine lined with ________ in order to increase nutrient absorption.

Omnivores have

Adult males are more likely to be lactose intolerant than adult females.

The brush border in the small intestine decreases the amount of surface area available for absorption of nutrients.

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons,Muscles,and Movement

The Immune System

Reproduction and Development

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

Filters

Examine the photograph below of an animal skull. The characteristics of this skull suggest that it belongs to a ,the type of animal that consumes only .

The images below are illustrating the intestine lined with in order to increase nutrient absorption.