an amount of food having an energy-producing value

Digestion is the process the body uses to break down food into nutrients. The body uses the nutrients for energy, growth, and cell repair.

tiny, finger like projections found in folds of small intestine.

special protein that helps a chemical reaction take place.

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Chemistry

Term	Definition
Autotroph
Heterotroph
Chemoautotroph
Photoautotroph
Calories	an amount of food having an energy-producing value
Energy
Ingestion
Digestion	Digestion is the process the body uses to break down food into nutrients. The body uses the nutrients for energy, growth, and cell repair.
Egestion
Roughage
Cellulose
Body mass index
Absorption
Diffusion
Villi	tiny, finger like projections found in folds of small intestine.
Constipation
Enzyme	special protein that helps a chemical reaction take place.
Macromolecules
Bulimia
Anorexia