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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

Digestion and Nutrition

Chapter Quiz


1	An animal whose diet consists primarily of fruit is a(n) ___________.
		A)	carnivore
		B)	frugivore
		C)	herbivore
		D)	insectivore


2	Large nutrient molecules are split apart by __________ enzymes.
		A)	condensive
		B)	synthase
		C)	hydrolytic
		D)	None of these is correct.


3	______________ is especially adaptive in animals that do not move about much.
		A)	Deposit feeding
		B)	Filter feeding
		C)	Heterotrophy
		D)	Meat eating


4	Digestion within food vacuoles of a cell is _____________ digestion.
		A)	intracellular
		B)	extracellular
		C)	internal
		D)	external


5	What is the advantage of extracellular digestion as compared to intracellular digestion?
		A)	larger food particles
		B)	eases waste removal
		C)	hydrolytic enzymes in a cavity connected to the outside
		D)	All of these are correct.


6	A muscular organ that mechanically digests food by grinding it against gravel is the __________.
		A)	rumen
		B)	cloaca
		C)	crop
		D)	gizzard


7	The organs of the human digestive system are supported by ___________.
		A)	muscle
		B)	mesentery
		C)	fat
		D)	None of these is correct.


8	Teeth begin the _______________ of food.
		A)	mechanical breakdown
		B)	chemical digestion
		C)	hydrolysis
		D)	All of these are correct.


9	What is not part of a typical tooth?
		A)	crown
		B)	dentine
		C)	jejunum
		D)	pulp


10	True or false. After food is mixed with gastric juices from the stomach it is called a bolus.
		A)	True
		B)	False


11	Hydrochloric acid is released by ___________ of the stomach lining.
		A)	pyloris
		B)	chief cells
		C)	parietal cells
		D)	enteroendocrine cells


12	Proteins are broken down by a number of enzymes. What proteolytic enzyme is released by the wall of the small intestine?
		A)	peptidase
		B)	trypsin
		C)	chymotrypsin
		D)	All of these are correct.


13	The hormone ___________, secreted by intestinal cells, triggers the release of bile from the gallbladder.
		A)	secretin
		B)	gastrin
		C)	cholecystokinin
		D)	All of these are correct


14	The small intestine has increased surface area for absorption due to ___________-.
		A)	villi
		B)	microvilli
		C)	circular ridges
		D)	All of these are correct.


15	True or false. Feces are only the non-nutritive portion of food that is not digested.
		A)	True
		B)	False


16	The feces collect in the final section of the digestive tract, called the _________.
		A)	rectum
		B)	cecum
		C)	anus
		D)	anal canal


17	About how much liquid does the pancreas release in a day?
		A)	10 milliliters
		B)	1 liter
		C)	1 milliliter
		D)	2 gallons


18	True or false. The amount of energy that a nutrient contains is typically measured in calories.
		A)	True
		B)	False


19	True or false. Vitamins contain energy.
		A)	True
		B)	False


20	Which vitamin aids in night vision?
		A)	A
		B)	D
		C)	E
		D)	K


21	A child that is too thin but has a protruding stomach is probably suffering from a type of starvation called ____________.
		A)	marasmus
		B)	kwashiorkor
		C)	anorexia nervosa
		D)	bulimia nervosa

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