Deck 5: Digestion, Absorption, and Metabolism

Question 1

Compared with the pH in the stomach,the pH in the small intestine is

A) lower.
B) higher.
C) the same.
D) neutral.

Answer 1

B
The pH of the stomach is acidic (lower)and the pH of the small intestine is alkaline (higher).

Question 2

After ingested food is mixed and churned with gastric secretions,the semifluid mass is called

A) chyle.
B) chyme.
C) renin.
D) bolus.

Answer 2

B
By the time the food mass reaches the lower portion of the stomach,it is a semiliquid,acid-food mix called chyme.

Question 3

After absorption,the end products of carbohydrate and protein digestion enter the

A) lacteal.
B) bile duct.
C) blood system.
D) bowel.

Answer 3

C
Once carbohydrates and protein are digested and absorbed,they cross the inner intestinal wall and enter the bloodstream.

Question 4

A pizza slice is being consumed by a hungry teen.The first actions of biting,chewing,and breaking up the slice into smaller particles is called

A) peristalsis.
B) segmentation.
C) pendular movements.
D) mastication.

Question 5

The lining of the stomach and intestine is protected from strong acid by

A) pepsinogen.
B) bile.
C) mucus.
D) the presence of food.

Question 6

After eating fried chicken the end products from the digestion of fat include

A) glycerol and fatty acids.
B) glucose and fatty acids.
C) amino acids and dipeptides.
D) cholesterol and glycerol.

Question 7

After digestion,fatty materials are absorbed into the

A) bloodstream.
B) outer skin.
C) colon.
D) lacteals.

Question 8

A means of absorption that occurs in the small intestine is

A) exchange.
B) pinocytosis.
C) filtration.
D) electrochemical transport.

Question 9

The hormone that stimulates the pancreas to release its secretions is

A) gastrin.
B) enterogastrone.
C) cholecystokinin.
D) secretin.

Question 10

Gas formation in the colon is the result of

A) ingestion of certain foods.
B) ingestion of too much water.
C) inadequate ingestion of fiber.
D) bacterial action on undigested items.

Question 11

The rhythmic contractions of the stomach and intestine that propel food along are called

A) segmentation.
B) peristalsis.
C) cardiospasm.
D) pendular movements.

Question 12

A meal consisting of country fried steak,carrots,and a baked potato with butter and sour cream would stimulate the hormone cholecystokinin because of the

A) presence of food in the duodenum.
B) presence of fat in the duodenum.
C) entry of the acidic chyme into the duodenum.
D) entry of bile into the duodenum.

Question 13

An example of a gastric secretion is

A) intestinal lipase.
B) pancreatic amylase.
C) bile.
D) hydrochloric acid.

Question 14

A food that is high in a macronutrient broken down by trypsin is

A) bread.
B) fruit.
C) margarine.
D) chicken.

Question 15

Bacteria found in the colon are significant because they

A) synthesize some vitamins.
B) are a source of contamination.
C) finish digesting whatever remains in the colon.
D) are necessary for mineral absorption.

Question 16

A food that begins chemical digestion in the mouth is

A) chicken.
B) yogurt.
C) candy.
D) bread.

Question 17

The enzyme that would be most important for digesting a skinless chicken breast would be

A) sucrase.
B) lipase.
C) peptidase.
D) bile.

Question 18

One type of movement in the small intestine is

A) mastication.
B) segmentation.
C) kinetic propulsion.
D) expulsion.

Question 19

The primary nutritional function of the large intestine is

A) absorption of fats.
B) absorption of water.
C) excretion of waste products.
D) completion of the digestive process.

Question 20

The process of digestion involves _____ and _____ actions.

A) thermal, chemical
B) chemical, electrical
C) mechanical, chemical
D) mechanical, thermal

Question 21

Two organs that work with the small intestine in digestion are the

A) liver and kidneys.
B) stomach and large intestine.
C) pancreas and liver.
D) large intestine and colon.

Question 22

Ways to minimize formation of stomach gas include

A) avoiding caffeine.
B) chewing with your mouth open.
C) drinking liquids through a straw.
D) not gulping.

Question 23

The surface of the intestinal wall has mucosal folds,villi,and microvilli to

A) aid in peristalsis.
B) increase the surface area for absorption.
C) decrease the surface area for absorption.
D) increase the number of enzyme-secreting cells.

Question 24

Dietary fiber is beneficial because it

A) is high in nutrients.
B) is readily digested.
C) adds bulk to feces.
D) absorbs excess nutrients.

Question 25

Bile contains

A) hormones.
B) enzymes.
C) plasma.
D) emulsifiers.

Question 26

Ms.J.complains of gas and bloating along with abdominal pain,especially after drinking milk or eating ice cream or cheese.She may have

A) lactose intolerance.
B) phenylalanine intolerance.
C) calcium deficiency.
D) vitamin D deficiency.

Question 27

The sum total of all the chemical changes that an organism performs to maintain its life and produce energy is the result of

A) metabolism.
B) digestion.
C) absorption.
D) respiration.

Question 28

Conversion of amino acids to glucose is called

A) metabolism.
B) glycogenosis.
C) gluconeogenesis.
D) catabolism.

Question 29

Which of the following foods would require peptidases to assist in its chemical digestion?

A) chicken.
B) banana.
C) orange juice.
D) margarine.

Question 30

A beverage that may cause intestinal gas in adults is

A) milk.
B) coffee.
C) apple juice.
D) cola.