6th Grade · Science · Quiz · shared by Luke Morgan
Explore chemical digestion with this 6th Grade Science quiz. It covers enzymes, starch breakdown, and salivary amylase in the mouth.
Multiple Choice
1. _____ According to the passage, what happens to a cracker if you chew it slowly for a long time?
A. It becomes harder and saltier.
B. It begins to taste sweet.
C. It turns into a complex carbohydrate.
D. It loses all of its flavor.
2. _____ Which specific substance is found in crackers, bread, and potatoes?
A. Salivary amylase
B. Maltose
C. Proteins
D. Starch
3. _____ What is the role of enzymes in the human body?
A. They are watery liquids that keep the mouth moist.
B. They are sugar units linked in long chains.
C. They are special proteins that speed up chemical reactions.
D. They are simple sugars used for energy.
4. _____ What is the name of the specific enzyme found in saliva?
A. Salivary amylase
B. Complex carbohydrate
C. Maltose enzyme
D. Starch protein
5. _____ Which process involves changing food into usable energy through chemical reactions?
A. Mechanical chewing
B. Physical breakdown
C. Chemical digestion
D. Starch linking
6. _____ What are starch molecules made of?
A. Long chains of sugar units
B. Watery liquid called saliva
C. Tiny helpers called enzymes
D. Salty flavor crystals
7. _____ When salivary amylase breaks down starch, what does the starch turn into?
A. Proteins
B. Maltose
C. Saliva
D. Complex chains
8. _____ Why does the cracker begin to taste sweet?
A. Because the salt on the cracker dissolves in water.
B. Because starch itself has a very sweet flavor.
C. Because starch is being changed into simpler sugars.
D. Because the cracker is being chewed into smaller pieces.
9. _____ Based on the text, what must happen to large starch molecules before they can be used for energy?
A. They must be linked into even longer chains.
B. They must be broken into smaller, simpler sugars.
C. They must be kept dry and away from saliva.
D. They must be swallowed immediately without chewing.