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Chapter Exam
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1
Your body needs essential amino acids to _________________.
A)construct cell membranes.
B)insulate nervous tissue.
C)provide energy.
D)make proteins.
2
Enzymes that break up carbohydrates into sugars are called ______________.
A)proteases.
B)amylases.
C)lipases.
D)buffers.
3
Digestion takes place in each of the following organs except _____________.
A)mouth.
B)stomach.
C)small intestine.
D)large intestine.
4
What connects the pharynx to the stomach?
A)trachea
B)epiglottis
C)esophagus
D)pyloric sphincter
5
The initial digestion of proteins takes place in the ____________.
A)mouth.
B)stomach.
C)small intestine.
D)large intestine.
6
The primary digestive organ of the digestive system is the _____________.
A)mouth.
B)stomach.
C)liver.
D)small intestine.
7
All of the following are absorbed into the lining of the small intestine except _______________.
A)simple sugars
B)amino acids
C)fatty acids
D)cellulose
8
Proteins are broken into fragments in the stomach by the action of ________________.
A)HCl.
B)pepsinogen.
C)pepsin.
D)gastrin.
9
The pancreas is responsible for the production of ________________.
A)digestive enzymes.
B)bicarbonate.
C)insulin.
D)all of the above
10
The liver produces bile salts that aid in the digestion of _____________.
A)fats.
B)proteins.
C)carbohydrates.
D)sugars.
11
Sodium and vitamin K are reabsorbed through the walls of the ___________.
A)stomach.
B)duodenum.
C)ileum.
D)large intestine.
12
Most animals digest their food intracellularly.
A)True
B)False
13
All vertebrates tear and grind ingested food by the action of their teeth.
A)True
B)False
14
Some animals cannot remain healthy if they are prevented from eating their feces.
A)True
B)False
15
Humans are unable to synthesize 8 amino acids making them essential amino acids as they must be obtained from food.
A)True
B)False
16
Individuals with a Body Mass Index value of _________ or over are considered overweight.
A)15
B)20
C)25
D)30
E)50
17
The majority of the small intestine consists of the _________________.
A)duodenum.
B)ileum.
C)cecum.
D)colon.
E)villus.
18
A consequence of a diet lacking vitamin C is _____________.
A)rickets
B)beriberi
C)scurvy
D)severe bleeding
19
Trace elements are ______________.
A)only necessary for plant growth.
B)minerals.
C)required in small amounts.
D)both a and b
E)both b and c
20
Over 90% of ulcers are stomach ulcers.
A)True
B)False





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