click below
click below
Normal Size Small Size show me how
Digestive System
Gr. 7 Science Ch 11-2
Question | Answer |
---|---|
nutrient | substances in the foods that provide energy |
nutrition | science of how food effects living organisms |
carbohydrate | the source of all energy |
protein | needed of growth and repair of body cells |
lipids | provides stored energy |
minerals | regulate chemical reactions in body |
vitamins | needed to help your body use other nuetrients |
digestion | the process of breaking down food |
mechanical digestion | breaking down food by chewing |
enzymes | speeds up chemical reactions in cells |
saliva | watery substance produced in your mouth |
peristalsis | wavelength muscle contractions |
amylase | an emzyne in saliva |
pepsin | an enzyme in stomach |
villi | tiny, finger like projections |
absorption | the movement of nutrient molecules into blood vessels |