Question

graded quiz: nutrition and digestion
0:00:46 elapsed
what action in the digestive process are your teeth most responsible for?
a) mechanical digestion
b) chemical digestion
c) ingestion
d) propulsion
question 3 (5 points)

Explanation:

• Mechanical digestion involves physical breakdown of food. Teeth chew and grind food, which is a physical process.
• Chemical digestion uses enzymes (e.g., in saliva, stomach acid) - teeth don't secrete enzymes.
• Ingestion is taking food into the mouth - teeth's role is beyond just taking in (they process the food physically).
• Propulsion is movement of food through digestive tract (e.g., peristalsis) - not teeth's main role.

Answer:

A. Mechanical digestion