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End of Chapter Quiz
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1
One way passage of food through the digestive system of many animal groups allows
A)intracellular digestion.
B)specialization of different regions of the digestive system.
C)release of digestive enzymes into the gut.
D)extracellular digestion.
2
Organisms with longer digestive systems, which help break down difficult-to-digest food, are usually
A)herbivores.
B)carnivores.
C)omnivores.
D)detritivores.
3
The purpose of a gizzard, like teeth, is to
A)hold on to prey.
B)begin the chemical digestion of food.
C)release enzymes.
D)begin the physical digestion of food.
4
When a mammal swallows food, it is prevented from going up into the nasal cavity by the
A)esophagus.
B)tongue.
C)soft palate.
D)epiglottis.
5
The first site of protein digestion in the digestive system occurs in the
A)mouth.
B)esophagus.
C)stomach.
D)small intestine.
6
Which of the following statements is false?
A)Carnivores have a reduced or absent cecum.
B)Only ruminants are able to digest cellulose.
C)The human digestive system contains bacteria but is not able to gain nutritional value from the digestion of cellulose.
D)Ruminants are able to regurgitate food.
7
Most of the absorption of broken down food takes place in the
A)stomach.
B)liver.
C)small intestine.
D)large intestine.
8
The purpose of the villi in the small intestine is
A)to neutralize stomach acid.
B)to produce bile.
C)to produce digestive enzymes.
D)to increase the surface area of the small intestine for absorption of nutrients.
9
The primary function of the large intestine is
A)the breakdown and absorption of fats.
B)the absorption of water.
C)the concentration of solid wastes.
D)the absorption of vitamin C.
10
The _______________ secretes digestive enzymes and bicarbonate solution into the small intestine to aid digestion.
A)pancreas
B)liver
C)gallbladder
D)All of these are correct.





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