1. B. enzyme.
2. A. epiglottis.
3. C. small intestine.
4. D. nephrons.
5. B. filtering the blood to remove wastes.
6. A. amino acids.
1. a(n) _ is a substance that helps in the chemical digestion of food.
A. epiglottis .
B. enzyme.
C. gallbladder.
D. peristalsis.
2. the _ is a small flap of tissue that closer the windpipe when you swallow food to keep you from chocking.
A. epiglottis.
B. enzyme.
C. gallbladder.
D. peristalsis.
3. which of the following organs is where most nutrients are absorbed?
A. large intestine.
B. esophagus.
C. small intestine.
D. stomach.
4. the kidneys contain millions of tiny filtering units called
A. urine.
B. villi.
C. peristalsis.
D. nephrons.
5. the kidneys have the important job of
A. reabsorbing water into the bloodstream.
B. filtering the blood to remove wastes.
C. breaking down food mechanically.
D. producing bile to help digest fats.
6. proteins are made up of substances called
A. amino acids.
B. sugars.
C. carbohydrates.
D. starches.
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