Question 1

What protects the stomach wall from the acidity of the gastric juice?

Accepted Answer

A) Helicobacter pylori. 
B) a viscous mucus layer. 
C) the hormone gastrin. 
D) the enzyme pepsin. 
A) Helicobacter pylori. 
B) a viscous mucus layer. 
C) the hormone gastrin. 
D) the enzyme pepsin. B

Question 2

Which of the following digestive organs is covered with finger-like projections called villi?

Accepted Answer

A) esophagus 
B) stomach 
C) small intestine 
D) large intestine 
A) esophagus 
B) stomach 
C) small intestine 
D) large intestine C

Question 3

Which of the following is most likely to inhibit gastric secretion and motility?

Accepted Answer

A) the sight and smell of food 
B) the release of the hormone gastrin from the stomach 
C) the passage of chyme into the small intestine 
D) the release of bile from the gallbladder 
A) the sight and smell of food 
B) the release of the hormone gastrin from the stomach 
C) the passage of chyme into the small intestine 
D) the release of bile from the gallbladder C

Question 4

Which choice completes the following phrase "More than 1 billion _______ per serving that contribute to healthy _______" which can typically be found on a probiotic yogurt label.

Accepted Answer

A) probiotic bacteria;gut flora 
B) probiotic bacteria;body 
C) prebiotic bacteria;gut flora 
D) inactive bacteria;body 
A) probiotic bacteria;gut flora 
B) probiotic bacteria;body 
C) prebiotic bacteria;gut flora 
D) inactive bacteria;body

Question 5

Which of the following a reactions does NOT occur in the human body?

Accepted Answer

A) Conversion of glucose to triglycerides. 
B) Conversion of glycogen to glucose. 
C) Conversion of ATP to amino acids. 
D) Conversion of proteins to amino acids. 
A) Conversion of glucose to triglycerides. 
B) Conversion of glycogen to glucose. 
C) Conversion of ATP to amino acids. 
D) Conversion of proteins to amino acids.

Question 6

What are protein molecules that accelerate the rate of specific chemical reactions without being changed themselves?

Accepted Answer

A) Hormones 
B) Mucus 
C) Enzymes 
D) Chyme 
A) Hormones 
B) Mucus 
C) Enzymes 
D) Chyme

Question 7

A person has a rare condition that dramatically reduces the amount of pancreatic amylase that is secreted into the small intestine.What treatment would be most effective?

Accepted Answer

A) Increase the amount of time chewing so that food can be exposed to sufficient salivary amylase 
B) Consume a supplement that contains the emzyme chymotrypsin,which can digest starch 
C) Consume a diet very low in starch 
D) Consume bread at each meal 
A) Increase the amount of time chewing so that food can be exposed to sufficient salivary amylase 
B) Consume a supplement that contains the emzyme chymotrypsin,which can digest starch 
C) Consume a diet very low in starch 
D) Consume bread at each meal

Question 8

The digestive system is an example of which of the following?

Accepted Answer

A) an organ system that includes the liver and has,as its only function,the secretion of chemical messengers that regulate food intake. 
B) an organ system that includes the gall bladder and has,as one of its functions,the absorption of nutrients into the blood. 
C) the only organ system involved in the ingestion,digestion,absorption and elimination of food. 
D) an organ system that includes the pancreas which is also part of the nervous system. 
A) an organ system that includes the liver and has,as its only function,the secretion of chemical messengers that regulate food intake. 
B) an organ system that includes the gall bladder and has,as one of its functions,the absorption of nutrients into the blood. 
C) the only organ system involved in the ingestion,digestion,absorption and elimination of food. 
D) an organ system that includes the pancreas which is also part of the nervous system.

Question 9

Which statement best describes heartburn?

Accepted Answer

A) It is caused by acidic stomach contents leaking into the esophagus. 
B) It is caused when the stomach bulges through the pyloric sphincter. 
C) It is more common in men and those who are underweight. 
D) All of the above answer choices correctly describe heartburn. 
A) It is caused by acidic stomach contents leaking into the esophagus. 
B) It is caused when the stomach bulges through the pyloric sphincter. 
C) It is more common in men and those who are underweight. 
D) All of the above answer choices correctly describe heartburn.

Question 10

What is the name given to metabolic reactions that build body structures?

Accepted Answer

A) catabolic reactions. 
B) anabolic reactions. 
C) hydrolytic reactions. 
D) deamination reactions. 
A) catabolic reactions. 
B) anabolic reactions. 
C) hydrolytic reactions. 
D) deamination reactions.

Question 11

Which of the following statements regarding intestinal microflora is FALSE?

Accepted Answer

A) The large intestine is home to many different species of bacteria. 
B) Bacteria in the gut break down indigestible dietary substances. 
C) Intestinal microflora interfere with immune function in the GI tract. 
D) Intestinal microflora optimize intestinal motility and transit time. 
A) The large intestine is home to many different species of bacteria. 
B) Bacteria in the gut break down indigestible dietary substances. 
C) Intestinal microflora interfere with immune function in the GI tract. 
D) Intestinal microflora optimize intestinal motility and transit time.

Question 12

Which statement best distinguishes between secretin and gastrin?

Accepted Answer

A) gastrin responds to the entry of food into the stomach,while secretin responds to entry of food into the small intestine. 
B) gastrin suppresses the release of gastric juices,while secretin suppresses the release of bile from the liver. 
C) gastrin reduces gastric motility as food leaves the stomach,while secretin stimulates the secretion of pancreatic juice as food enters the small intestine. 
D) gastrin stimulates gastric motility,while secretin stimulates the contraction of the gall bladder. 
A) gastrin responds to the entry of food into the stomach,while secretin responds to entry of food into the small intestine. 
B) gastrin suppresses the release of gastric juices,while secretin suppresses the release of bile from the liver. 
C) gastrin reduces gastric motility as food leaves the stomach,while secretin stimulates the secretion of pancreatic juice as food enters the small intestine. 
D) gastrin stimulates gastric motility,while secretin stimulates the contraction of the gall bladder.

Question 13

What is another name for the digestive tract?

Accepted Answer

A) urinary tract. 
B) gastrointestinal tract. 
C) endocrine system. 
D) integumentary system. 
A) urinary tract. 
B) gastrointestinal tract. 
C) endocrine system. 
D) integumentary system.

Question 14

What is required in order for the absorption of nutrients by simple diffusion to occur?

Accepted Answer

A) a carrier molecule. 
B) energy. 
C) a concentration gradient. 
D) All of the above answer choices are correct 
A) a carrier molecule. 
B) energy. 
C) a concentration gradient. 
D) All of the above answer choices are correct

Question 15

There are two major functions associated with the digestive system.One is digestion.Which is the other?

Accepted Answer

A) metabolism. 
B) absorption. 
C) circulation. 
D) excretion. 
A) metabolism. 
B) absorption. 
C) circulation. 
D) excretion.

Question 16

Which mechanism requires the most energy?

Accepted Answer

A) active transport 
B) facilitated diffusion 
C) osmosis 
D) simple diffusion 
A) active transport 
B) facilitated diffusion 
C) osmosis 
D) simple diffusion

Question 17

What is the most common cause of ulcers?

Accepted Answer

A) stress. 
B) eating fatty foods. 
C) bacterial infection. 
D) the pain reliever Tylenol. 
A) stress. 
B) eating fatty foods. 
C) bacterial infection. 
D) the pain reliever Tylenol.

Question 18

Which statement best describes pepsinogen?

Accepted Answer

A) It is secreted by the same cells in the stomach that produce HCl. 
B) In its active form,it begins the digestion of food proteins, 
C) In its active form,it continues the digestion of starch begun by salivary amylase. 
D) It is secreted by the chief cells in the stomach,which also secrete the intrinsic factor. 
A) It is secreted by the same cells in the stomach that produce HCl. 
B) In its active form,it begins the digestion of food proteins, 
C) In its active form,it continues the digestion of starch begun by salivary amylase. 
D) It is secreted by the chief cells in the stomach,which also secrete the intrinsic factor.

Question 19

Describe the type of absorption mechanism represented by each of the four separate parts in the figure.

Accepted Answer

Simple diffusion,osm

Question 20

The metabolic breakdown of glucose for available energy is an example of what type of metabolic process?

Accepted Answer

A) catabolism. 
B) anabolism. 
C) digestion. 
D) excretion. 
A) catabolism. 
B) anabolism. 
C) digestion. 
D) excretion.

Exam 3: Digestion, Absorption, and Metabolism

What protects the stomach wall from the acidity of the gastric juice?

Which of the following digestive organs is covered with finger-like projections called villi?

Which of the following is most likely to inhibit gastric secretion and motility?

Which choice completes the following phrase "More than 1 billion _______ per serving that contribute to healthy _______" which can typically be found on a probiotic yogurt label.

Which of the following a reactions does NOT occur in the human body?

What are protein molecules that accelerate the rate of specific chemical reactions without being changed themselves?

A person has a rare condition that dramatically reduces the amount of pancreatic amylase that is secreted into the small intestine.What treatment would be most effective?

The digestive system is an example of which of the following?

Which statement best describes heartburn?

What is the name given to metabolic reactions that build body structures?

Which of the following statements regarding intestinal microflora is FALSE?

Which statement best distinguishes between secretin and gastrin?

What is another name for the digestive tract?

What is required in order for the absorption of nutrients by simple diffusion to occur?

There are two major functions associated with the digestive system.One is digestion.Which is the other?

Which mechanism requires the most energy?

What is the most common cause of ulcers?

Which statement best describes pepsinogen?

Describe the type of absorption mechanism represented by each of the four separate parts in the figure.

The metabolic breakdown of glucose for available energy is an example of what type of metabolic process?

Nutrition: Food for Health

Nutrition Guidelines: Applying the Science of Nutrition

Carbohydrates: Sugars, Starches, and Fibre

Lipids

Proteins and Amino Acids

Energy Balance and Weight Management

A: the Water-Soluble Vitamins

The Fat-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

The Trace Elements

Nutrition and Physical Activity

Nutrition During Pregnancy and Lactation

Nutrition From Infancy to Adolescence

Nutrition and Aging: the Adult Years

Food Safety

World Hunger and Malnutrition

Focus 1: Focus on Beyond the Basics

Focus 2: Focus on Alcohol

Focus 3: Focus on Obesity, Metabolism, and Disease Risk

Focus 4: Focus on Phytochemicals

Focus5:focus on Natural Health Products

Focus 6: Focus on Integrating Nutrient Function in the Body

Focus 7: Focus on Eating Disorders

Focus 8: Focus on Biotechnology

Filters

Which choice completes the following phrase "More than 1 billion _ per serving that contribute to healthy _" which can typically be found on a probiotic yogurt label.