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SOMEONE PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!
Which of the following statements regarding the digestive system is correct?
a
Peristalsis occurs in each organ, enabling nutrients to be more easily absorbed.
b
Wherever mechanical digestion occurs, chemical digestion also occurs.
c
All organs contain glands that release enzymes for chemical digestion.
d
The pH of each organ is the same so the food can easily move through the system.

Respuesta :

by elimination: d is wrong for sure.

c is not right as there is no gland in the esophagus or the pharynx

b is also wrong as if there is no gland, then there is no enzyme and no chemical digestion in esophagus or pharynx

a is the only one left.
b
Wherever mechanical digestion occurs, chemical digestion also occurs.

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