What is meant by physical and chemical digestion?
Answers
Physical Digestion- Mastication which means chewing of the food by the mouth teeth.
• It is also known as mechanical digestion.
• Teeth play an important role in the process.
• There is also a important role of lips and tongue which help in the chewing process.
Chemical Digestion- When when saliva is mixed with food particles is known as chemical digestion.
• In the Saliva there will be just 0.5% salt and 99.5% water is present .
• Salts may be organic or inorganic.
• Mucin, thiccynate, ptylin are the main examples of this salt.
Answer:
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~~There are two kinds of digestion: mechanical/ physical and chemical.
Mechanical/ physical digestion involves physically breaking the food into smaller pieces. ... Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva.
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