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Pre-Test
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1
Digestion takes place in each of the following organs except
A)mouth.
B)stomach.
C)small intestine.
D)large intestine.
2
Proteins are broken into long fragments in the stomach by the action of
A)HCl.
B)pepsinogen.
C)pepsin.
D)gastrin.
3
Most animals digest their food intracellularly.
A)True
B)False
4
Humans are unable to synthesize 8 amino acids making them essential amino acids as they must be obtained from food.
A)True
B)False
5
The shortest portion of the small intestine is the
A)duodenum.
B)ileum.
C)cecum.
D)colon.
E)villus.





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