Question 1

Food mixes with gastric juices in the stomach to form a thick creamy mass called chyme.

Accepted Answer

A) True 
 B)False

Question 2

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.F) C) and E)
G) B) and D)

Question 3

The liver functions in digestion by

Accepted Answer

A)   converting hemoglobin to bilirubin and biliverdin.
B)   destroying old red blood cells.
C)   producing blood proteins.
D)   producing urea.
E)   producing bile.F) D) and E)
G) A) and D)

Question 4

Which of the following human digestive enzymes is NOT correctly matched to its substrate?

Accepted Answer

A)   pepsin - protein
B)   trypsin - nucleic acid
C)   salivary amylase - starch
D)   lipase - fat
E)   maltase - maltoseF) C) and E)
G) A) and E)

Question 5

Because of the tooth structure and diet, which of the following would be classified as a carnivore?

Accepted Answer

A)   human
B)   rat
C)   dolphin
D)   raccoon
E)   brown bearF) C) and D)
G) B) and C)

Question 6

The hepatic portal vein brings blood to the liver from the _______ and as the blood passes through the liver it is __________.

Accepted Answer

A)   the lungs; deoxygenated
B)   the mouth; acidified
C)   the pancreas; oxygenated
D)   the small intestine; detoxifiedE) B) and D)
F) B) and C)

Question 7

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.F) B) and C)
G) None of the above

Question 8

Identify which of the following groups is composed of minerals.

Accepted Answer

A)   iron, calcium, magnesium and zinc
B)   iron, magnesium, riboflavin and calcium
C)   zinc, glucose, iron and magnesium
D)   zinc, iron, calcium and NAD+
E)   calcium, magnesium, niacin and ironF) All of the above
G) C) and E)

Question 9

Which list of features is associated with the small intestine?

Accepted Answer

A)   duodenum, bile and villi
B)   duodenum, chyme and villi
C)   cecum, bile and lacteals
D)   lacteals, appendix and villiE) B) and C)
F) A) and D)

Question 10

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 pharynxE) A) and D)
F) A) and B)

Question 11

_____ 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 acidsE) C) and D)
F) B) and D)

Question 12

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 lead to an increased risk of cardiovascular disease.

Accepted Answer

A)   LDL; HDL
B)   HDL; trans-fats
C)   LDL; insulin
D)   HDL; LDLE) None of the above
F) B) and D)

Question 13

When the liver malfunctions and there is an abnormally large amount of bilirubin in the blood it can cause

Accepted Answer

A)   cirrhosis of the liver.
B)   kidney stones.
C)   gallstones.
D)   the rolling stones.
E)   jaundice.F) B) and C)
G) C) and E)

Question 14

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.F) B) and E)
G) B) and C)

Question 15

Which of the following is NOT an accessory organ of digestion?

Accepted Answer

A)   pancreas
B)   salivary glands
C)   appendix
D)   gall bladderE) A) and C)
F) A) and B)

Question 16

The function of canine teeth in humans is

Accepted Answer

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

Question 17

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

Accepted Answer

A)   pharynx
B)   esophagus
C)   stomach
D)   cecum
E)   pancreasF) B) and E)
G) A) and D)

Question 18

Protein digestion occurs in the

Accepted Answer

A)   mouth, stomach, and small intestine.
B)   stomach and small intestine.
C)   stomach, esophagus, and small intestine.
D)   mouth and large intestine.
E)   small intestine, large intestine, and mouth.F) A) and B)
G) A) and C)

Question 19

The tubular structure that moves food by peristalsis from the mouth to the stomach is the

Accepted Answer

A)   epiglottis.
B)   trachea.
C)   tongue.
D)   esophagus.
E)   glottis.F) A) and C)
G) D) and E)

Question 20

The finger-like projections along the surface of the small intestines are called

Accepted Answer

A)   mucosa.
B)   lacteals.
C)   capillaries.
D)   microvilli.
E)   appendices.F) None of the above
G) B) and E)

Exam 34: Digestive Systems and Nutrition

The hepatic portal vein brings blood to the liver from the _______ and as the blood passes through the liver it is __________.

Correct AnswerverifiedShow Answer

When the liver malfunctions and there is an abnormally large amount of bilirubin in the blood it can cause

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Identify which of the following groups is composed of minerals.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which animals would be classified as continuous feeders?

Correct AnswerverifiedShow Answer

Protein digestion occurs in the

Correct AnswerverifiedShow Answer

Which list of features is associated with the small intestine?

Correct AnswerverifiedShow Answer

Because of the tooth structure and diet, which of the following would be classified as a carnivore?

Correct AnswerverifiedShow Answer

The finger-like projections along the surface of the small intestines are called

Correct AnswerverifiedShow Answer

Food mixes with gastric juices in the stomach to form a thick creamy mass called chyme.

Correct AnswerverifiedShow Answer

Which of the following human digestive enzymes is NOT correctly matched to its substrate?

Correct AnswerverifiedShow Answer

Which of the following statements concerning dietary protein is true?

Correct AnswerverifiedShow Answer

The tubular structure that moves food by peristalsis from the mouth to the stomach is the

Correct AnswerverifiedShow Answer

Which of the following is NOT an accessory organ of digestion?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The small intestines receive

Correct AnswerverifiedShow Answer

The function of canine teeth in humans is

Correct AnswerverifiedShow Answer

The liver functions in digestion by

Correct AnswerverifiedShow Answer

The hepatic portal vein brings blood to the liver from the _ and as the blood passes through the liver it is ____.

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

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