Which is the protective substance that lines the stomach?
A. pepsin<<
B. mucus
C. hydrochloric acid
D. saliva
thank you
B. Mucus is the protective substance that lines the stomach.
def not c bc thats whats in beauty products
not saliva thats in ur mouth
idk what pepsin is so yes ai is right
The protective substance that lines the stomach is B. mucus.
To find this answer, you could start by understanding the function of each option.
A. Pepsin is an enzyme that helps in digesting proteins. It doesn't act as a protective substance.
C. Hydrochloric acid helps in digestion by breaking down food, particularly proteins. It is not the protective lining.
D. Saliva is produced in the mouth and helps in breaking down food, but it doesn't line the stomach.
To determine the correct answer, you would need to know that the stomach has a protective lining to prevent it from being damaged by its own digestive acids. The substance responsible for this protection is mucus. Mucus is produced by the gastric mucosa, the lining of the stomach, and it forms a layer that acts as a barrier between the stomach epithelium and gastric acid.
Therefore, the correct answer is B. mucus.