Digestion and Food Composition

These flashcards cover key concepts related to digestion, food composition, and the chemical and mechanical processes involved.

Proteins are chains of __.

amino acids

A chain of two to 10 amino acids is called __.

peptide

Lipids are formed from and .

fatty acids; glycerol

Single sugar is also called __.

monosaccharide

An example of a double sugar is __.

lactose

Complex sugar consists of chains of __ like starch and cellulose.

molecules

When testing for starch, adding iodine water turns from brown-orange to __.

dark blue

The presence of silver chloride in a chloride test indicates a __ precipitate.

white

In the protein test, the food solution turns __ when copper sulfate and sodium hydroxide are added.

violet

The transformation of macromolecules of food into nutrients is ensured by the digestive __.

system

Mechanical transformation includes chewing in the mouth and __ in the stomach.

churning

Chemical digestion involves the action of __ found in digestive juices.

enzymes

Enzymes are __ that catalyze food digestion.

biocatalysts

Enzymes need a definite __ medium to function properly.

pH

High temperatures can __ the enzyme.

destroy

Low temperatures __ the enzyme.

inactivate