General science ch 7
Terms
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- fats
-
lipids
provide energy to body and help body absorb vitamins - villi
-
folds covered with finger like projections
increases the surfacce area of the small intestine so that nutrients in the chyme have more places to be absorbed - mechanical digestion
- chewed, mixed, churned
- peristalsis
- waves of muscle contractions in the digestive tract
- food groups
- foods that contain the same nutrient are grouped together
- chemical digestion
-
chemical reaction break down large food molecules into smaller ones
- chyme
- a thin wateery liquid that moves out of the stomach and into the small intestine
- vitamins
- organic nutrients needed in small quantities for growth, regulation body functions, and preventing some diseases
- proteins
- large molecules that contain HONC sometimes sulfur
- enzyme
- a type of protein that speeds up chemical reactions
- carbohydrates
-
usually the main sources of energy for your body.
CHO - nutrients
- substances that provide energy and materials for cell development, growth, and repair
- minerals
-
inorganic nutrients that lack carbon
regulate chem. reactions in the body - amino acids
- building blocks of proteins
- digestion
- process that breaks down food into small molecules so that they can be absorbed and used as energy