Question 1

The function of canine teeth in humans is

Accepted Answer

A) crushing. 
B) grinding. 
C) shearing. 
D) biting. 
E) tearing. 
A) crushing. 
B) grinding. 
C) shearing. 
D) biting. 
E) tearing.

Question 2

________ acts on proteins to produce peptides which are later broken down into ________ in the small intestine.

Accepted Answer

A) Salivary amylase; amino acids 
B) Maltase; glucose 
C) Pepsin; amino acids 
D) Pepsin; fatty acids 
A) Salivary amylase; amino acids 
B) Maltase; glucose 
C) Pepsin; amino acids 
D) Pepsin; fatty acids

Question 3

Which animals would be classified as continuous feeders?

Accepted Answer

A) clams,baleen whales,and oysters 
B) clams,crickets,and dolphins 
C) worms,clams,and crayfish 
D) oysters,hummingbirds and planarian 
E) None of these groups are all continuous feeders. 
A) clams,baleen whales,and oysters 
B) clams,crickets,and dolphins 
C) worms,clams,and crayfish 
D) oysters,hummingbirds and planarian 
E) None of these groups are all continuous feeders.

Question 4

Carbohydrate digestion begins in the mouth and continues on into the small intestines.Explain the steps of carbohydrate digestion,including in your discussion why salivary amylase is nonfunctional in the stomach?

Accepted Answer

Saliva contains salivary amylase,which b

Question 5

What possible dietary complications could a person develop if they had their pancreas removed?

Accepted Answer

A) They would not produce the pancreatic enzyme trypsin.This would prevent them from breaking down proteins into amino acids which could lead to complications in repairing muscle tissue. 
B) They would not produce the enzyme pancreatic amylase.This would prevent them from breaking down proteins into amino acids which could lead to complications in repairing muscle tissue. 
C) They would not produce the pancreatic enzyme trypsin.This would prevent them from breaking down carbohydrates into glucose which could lead to a decrease in the availability of energy in their body. 
D) There would be an overproduction of the enzyme trypsin.This would cause an increased rate of protein digestion that could result in the muscle cells being destroyed by the individuals own body. 
A) They would not produce the pancreatic enzyme trypsin.This would prevent them from breaking down proteins into amino acids which could lead to complications in repairing muscle tissue. 
B) They would not produce the enzyme pancreatic amylase.This would prevent them from breaking down proteins into amino acids which could lead to complications in repairing muscle tissue. 
C) They would not produce the pancreatic enzyme trypsin.This would prevent them from breaking down carbohydrates into glucose which could lead to a decrease in the availability of energy in their body. 
D) There would be an overproduction of the enzyme trypsin.This would cause an increased rate of protein digestion that could result in the muscle cells being destroyed by the individuals own body.

Question 6

The structural features of the small intestine that enable the absorption of nutrients are the

Accepted Answer

A) microvilli. 
B) appendix. 
C) rugae. 
D) capillary beds. 
A) microvilli. 
B) appendix. 
C) rugae. 
D) capillary beds.

Question 7

If a person has a diet high in saturated fats,________ molecules can carry cholesterol from the liver to cells and to the arterial walls,whereas ________ transports cholesterol from the cells to the liver,where it is converted to bile salts which can modulate cardiovascular function.

Accepted Answer

A) LDL; HDL 
B) HDL; trans-fats 
C) LDL; insulin 
D) HDL; LDL 
A) LDL; HDL 
B) HDL; trans-fats 
C) LDL; insulin 
D) HDL; LDL

Question 8

Which of the following statements about the colon is NOT true?

Accepted Answer

A) The colon is active in water absorption,removing about 95% of the water that enters it and returning it to the bloodstream. 
B) Insufficient absorption of water can result in diarrhea that may be life-threatening. 
C) Feces consists of about 25% water and 75% solids that are mainly bacteria from the intestinal tract. 
D) The last section of the colon is the rectum,which terminates in the anus. 
E) Cells in the walls of the large intestine absorb vitamin K that is produced by bacteria resident in the colon. 
A) The colon is active in water absorption,removing about 95% of the water that enters it and returning it to the bloodstream. 
B) Insufficient absorption of water can result in diarrhea that may be life-threatening. 
C) Feces consists of about 25% water and 75% solids that are mainly bacteria from the intestinal tract. 
D) The last section of the colon is the rectum,which terminates in the anus. 
E) Cells in the walls of the large intestine absorb vitamin K that is produced by bacteria resident in the colon.

Question 9

Diabetes mellitus,which is indicated by high levels of blood glucose that have spilled over into the urine,is decreasing among the citizens of the United States.

Accepted Answer

A) True 
 B)False

Question 10

The small intestines receive

Accepted Answer

A) bile from the liver and gall bladder. 
B) pancreatic juices from the pancreas. 
C) chyme from the stomach. 
D) All of these are correct. 
E) None of these are correct. 
A) bile from the liver and gall bladder. 
B) pancreatic juices from the pancreas. 
C) chyme from the stomach. 
D) All of these are correct. 
E) None of these are correct.

Question 11

List,in order,the organs that food will go through as it starts in the mouth and comes out the anus.

Accepted Answer

Food will start in the mouth,swallowed i

Question 12

Which of the following is considered an accessory gland in the digestive system?

Accepted Answer

A) pharynx 
B) esophagus 
C) stomach 
D) cecum 
E) pancreas 
A) pharynx 
B) esophagus 
C) stomach 
D) cecum 
E) pancreas

Question 13

Which features are found in organisms that have an incomplete digestive tract?

Accepted Answer

A) pharynx,digestive enzymes and diffusion of nutrients 
B) crop,digestive enzymes and diffusion of nutrients 
C) digestive enzymes,esophagus and diffusion of nutrients 
D) gizzard,salivary amylase and a pharynx 
A) pharynx,digestive enzymes and diffusion of nutrients 
B) crop,digestive enzymes and diffusion of nutrients 
C) digestive enzymes,esophagus and diffusion of nutrients 
D) gizzard,salivary amylase and a pharynx

Question 14

Which digestive enzyme is produced in the pancreas and is responsible for the breakdown of protein into peptides?

Accepted Answer

A) trypsin 
B) maltase 
C) peptidase 
D) pancreatic amylase 
A) trypsin 
B) maltase 
C) peptidase 
D) pancreatic amylase

Question 15

All of the following statements are true about squid EXCEPT

Accepted Answer

A) squid are continuous feeders. 
B) the squid's tentacles seize its prey. 
C) the mouth has jaws that bite off pieces of prey with the help of a toothy radula. 
D) digestion occurs in the stomach and a cecum. 
E) squids are molluscs. 
A) squid are continuous feeders. 
B) the squid's tentacles seize its prey. 
C) the mouth has jaws that bite off pieces of prey with the help of a toothy radula. 
D) digestion occurs in the stomach and a cecum. 
E) squids are molluscs.

Question 16

An unhealthy diet can lead to obesity in individuals which can result in cardiovascular disease and type 2 diabetes.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements concerning dietary protein is true?

Accepted Answer

A) Protein should supply the bulk of our dietary calories. 
B) It is not possible for vegetarians to have a balanced diet with adequate protein intake. 
C) The average American eats about half the recommended protein. 
D) Dietary protein is digested to nucleic acids,which are used to make DNA. 
E) Growth in children may be delayed or stunted if essential amino acids are not present in their diets. 
A) Protein should supply the bulk of our dietary calories. 
B) It is not possible for vegetarians to have a balanced diet with adequate protein intake. 
C) The average American eats about half the recommended protein. 
D) Dietary protein is digested to nucleic acids,which are used to make DNA. 
E) Growth in children may be delayed or stunted if essential amino acids are not present in their diets.

Exam 34: Digestive Systems and Nutrition

The function of canine teeth in humans is

________ acts on proteins to produce peptides which are later broken down into ________ in the small intestine.

Which animals would be classified as continuous feeders?

Carbohydrate digestion begins in the mouth and continues on into the small intestines.Explain the steps of carbohydrate digestion,including in your discussion why salivary amylase is nonfunctional in the stomach?

What possible dietary complications could a person develop if they had their pancreas removed?

The structural features of the small intestine that enable the absorption of nutrients are the

If a person has a diet high in saturated fats,________ molecules can carry cholesterol from the liver to cells and to the arterial walls,whereas ________ transports cholesterol from the cells to the liver,where it is converted to bile salts which can modulate cardiovascular function.

Which of the following statements about the colon is NOT true?

Diabetes mellitus,which is indicated by high levels of blood glucose that have spilled over into the urine,is decreasing among the citizens of the United States.

The small intestines receive

List,in order,the organs that food will go through as it starts in the mouth and comes out the anus.

Which of the following is considered an accessory gland in the digestive system?

Which features are found in organisms that have an incomplete digestive tract?

Which digestive enzyme is produced in the pancreas and is responsible for the breakdown of protein into peptides?

All of the following statements are true about squid EXCEPT

An unhealthy diet can lead to obesity in individuals which can result in cardiovascular disease and type 2 diabetes.

Which of the following statements concerning dietary protein is true?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development and Aging

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

Filters

acts on proteins to produce peptides which are later broken down into in the small intestine.

If a person has a diet high in saturated fats, molecules can carry cholesterol from the liver to cells and to the arterial walls,whereas transports cholesterol from the cells to the liver,where it is converted to bile salts which can modulate cardiovascular function.