FORESTRY
PLANT AND WOOD ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Physical Change
|
|
|
Chemical Change
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.
Detailed explanation-2: -Food is broken into smaller parts and mixes continually with enzymes and other gastric juices. Mechanical digestion occurs in the mouth, stomach, and small intestine. Food is chemically changed in digestion when new, smaller substances are formed. These chemical changes are examples of chemical digestion.
Detailed explanation-3: -Answer and Explanation: The chemical change that occurs to food in the stomach is that amino acids are released from polypeptides (large proteins). These changes are brought about by the action of proteases or protein digesting enzymes such as pepsin.