Which best describes the physical and chemical digestion of food?

Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.
Physical and chemical digestion occur in the small intestine; only chemical digestion occurs in the mouth.
Only physical digestion occurs in the stomach; chemical and physical digestion occur in the large intestine.
Only physical digestion occurs in the large intestine; physical and chemical digestion occur in the stomach.

Which best describes the physical and chemical digestion of food?

Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.

Explanation:

Digestion begins in the mouth as mastication of food also enhances digestion after which enzyme acts on food particle before it is passed to the intestine that all other chemical actions takes place

Physical and Chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.

Explanation:

Physical, otherwise known as mechanical, occurs in the mouth, as you use your teeth to break down food. Chemical digestion also occurs in the mouth, as your mouth releases amylase, an enzyme that is in your saliva that breaks down food.

Your stomach on the other hand, is very acidic, as it uses the acids in your stomach to break down the food on its own. Therefore, only chemical digestion is used.

not too sure maybe olecranon process

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure