Question 1

The optimal pH for the functioning of pepsin is 3; the optimal pH for the functioning of trypsin is 7. Explain why this difference would be expected.

Accepted Answer

The difference in optimal pH for the fun...

Question 2

One important role of the salivary glands is the production of mucus, because they are the only glands that produce it.

Accepted Answer

A) True 
 B)False

Question 3

Match each structure with its function, description, or the enzyme it produces.
-Organ in which trypsinogen is made

Accepted Answer

A)  Gallbladder
B)  Salivary gland
C)  Pancreas
D)  Stomach
E)  Small intestineF) Liver

Question 4

Paracellular absorption is the absorption of nutrients between cells.

Accepted Answer

A) True 
 B)False

Question 5

Micelles are formed in the GI lumen.

Accepted Answer

A) True 
 B)False

Question 6

The only voluntary activity of the GI tract is swallowing.

Accepted Answer

A) True 
 B)False

Question 7

Lysophosphatide is a possible end product of fat digestion.

Accepted Answer

A) True 
 B)False

Question 8

Peristalsis is a back-and-forth action that breaks apart chunks of food and mixes in digestive juices.

Accepted Answer

A) True 
 B)False

Question 9

The bolus of food is formed during the pharyngeal stage of deglutition.

Accepted Answer

A) True 
 B)False

Question 10

Bicarbonates are useful in the GI tract for neutralizing hydrochloric acid.

Accepted Answer

A) True 
 B)False

Question 11

The hormones GIP, secretin, and CCK are formed in the intestinal mucosa.

Accepted Answer

A) True 
 B)False

Question 12

The process of fat emulsification consists of:

Accepted Answer

A)   chemically breaking down fat molecules.
B)   the secretion of digestive juices for fat digestion.
C)   absorption of fats.
D)   breaking fats into small droplets.

Question 13

The process of emptying the stomach takes about 12 hours after a meal.

Accepted Answer

A) True 
 B)False

Question 14

Allen was an alcoholic. He had a condition known as alcoholic hepatitis. This condition causes inflammation of the liver and results in reduced production and secretion of bile. What digestive complication does this produce?

Accepted Answer

Allen's condition, alcoholic hepatitis, ...

Question 15

Polysaccharides are hydrolyzed into disaccharides by enzymes known as:

Accepted Answer

A)   lipase.
B)   proteases.
C)   maltase.
D)   amylase.

Question 16

An end product of fat digestion is:

Accepted Answer

A)   glycerol.
B)   glucose.
C)   glycogen.
D)   galactose.

Question 17

Enzymes are usually defined as inorganic catalysts.

Accepted Answer

A) True 
 B)False

Question 18

Which statement best explains the process of absorption?

Accepted Answer

A)   Absorption is the process of taking food into the mouth and starting it on its journey through the digestive tract.
B)   Absorption releases digestive juices (containing enzymes, acids, bases, mucus, bile, or other products that facilitate digestion) .
C)   Absorption is the movement by the muscular components of the digestive tube, including processes of mechanical digestion; examples include peristalsis and segmentation.
D)   Absorption is the passage of substances (notably digested foods, water, salts, and vitamins)  through the intestinal mucosa into the blood or lymph.

Question 19

The stomach releases gastric inhibitory peptide to slow down peristalsis in the duodenum.

Accepted Answer

A) True 
 B)False

Question 20

Bicarbonates are useful in the GI tract to:

Accepted Answer

A)   neutralize hydrochloric acid.
B)   break down fats.
C)   activate secretin.
D)   activate pepsin.

Exam 40: Digestion and Absorption

Polysaccharides are hydrolyzed into disaccharides by enzymes known as:

Correct AnswerverifiedShow Answer

Lysophosphatide is a possible end product of fat digestion.

Correct AnswerverifiedShow Answer

Bicarbonates are useful in the GI tract to:

Correct AnswerverifiedShow Answer

The optimal pH for the functioning of pepsin is 3; the optimal pH for the functioning of trypsin is 7. Explain why this difference would be expected.

Correct AnswerAnswered by ExamLex AIThe difference in optimal pH for the fun...View AnswerShow Answer

One important role of the salivary glands is the production of mucus, because they are the only glands that produce it.

Correct AnswerverifiedShow Answer

Paracellular absorption is the absorption of nutrients between cells.

Correct AnswerverifiedShow Answer

The process of fat emulsification consists of:

Correct AnswerverifiedShow Answer

The hormones GIP, secretin, and CCK are formed in the intestinal mucosa.

Correct AnswerverifiedShow Answer

The only voluntary activity of the GI tract is swallowing.

Correct AnswerverifiedShow Answer

Which statement best explains the process of absorption?

Correct AnswerverifiedShow Answer

The bolus of food is formed during the pharyngeal stage of deglutition.

Correct AnswerverifiedShow Answer

Enzymes are usually defined as inorganic catalysts.

Correct AnswerverifiedShow Answer

Peristalsis is a back-and-forth action that breaks apart chunks of food and mixes in digestive juices.

Correct AnswerverifiedShow Answer

The stomach releases gastric inhibitory peptide to slow down peristalsis in the duodenum.

Correct AnswerverifiedShow Answer

The process of emptying the stomach takes about 12 hours after a meal.

Correct AnswerverifiedShow Answer

Match each structure with its function, description, or the enzyme it produces. -Organ in which trypsinogen is made

Correct AnswerverifiedShow Answer

Micelles are formed in the GI lumen.

Correct AnswerverifiedShow Answer

Allen was an alcoholic. He had a condition known as alcoholic hepatitis. This condition causes inflammation of the liver and results in reduced production and secretion of bile. What digestive complication does this produce?

Correct AnswerAnswered by ExamLex AIAllen's condition, alcoholic hepatitis, ...View AnswerShow Answer

Bicarbonates are useful in the GI tract for neutralizing hydrochloric acid.

Correct AnswerverifiedShow Answer

An end product of fat digestion is:

Correct AnswerverifiedShow Answer

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Answered by ExamLex AI
The difference in optimal pH for the fun...
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Allen's condition, alcoholic hepatitis, ...
View Answer

Correct Answer
verified

Correct Answer
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