Question

Mrs. Ruhala set up an experiment where she tested for the presence of monosaccharides in food. She took a cracker, and it tested negative for monosaccharides. Then she put the cracker in her mouth, chewed it for a few minutes, and then spit it out into a test tube. It now tested positive for monosaccharides.

What happened?

a
The physical action of chewing broke down the lipids in the cracker and producing a positive reaction.
b
Water in the saliva catalyzed the cracker proteins and broke them into monosaccharides.
c
An enzyme in her mouth broke down the polysaccharides in the cracker into monosaccharides.
d
Mrs. Ruhala is a magical being and ewww.

Answer 1

c. An enzyme in her mouth broke down the polysaccharides in the cracker into monosaccharides.