1. A(n) _______ is a substance that helps in the chemical digestion of food.
epiglottis
enzyme
gallbladder
peristalsis

2. The ________ is a small flap of tissue that closes the windpipe when you swallow food to keep you from.
choking.
epiglottis
enzyme
gallbladder
peristalsis

3. Which of the following organs is where most nutrients are absorbed?
large intestine
esophagus
small intestine
stomach

4. The kidneys contains millions of tiny filtering units called.
urine.
villi.
peristalsis.
nephrons.

5. The kidneys have the important job of.
reabsorbing water into the bloodstream.
filtering the blood to remove wastes.
breaking down food mechanically.
producing bile to help digest fats.

6. Proteins are made up of substances called.
amino acids.
sugars.
carbohydrates.
starches.

7. According to the chart “Recommended Servings Per Day for 16-Year-Olds”, which food group do
teenagers need the least? (hint: 8 ounces = 1 cup).
protein
dairy
vegetables
grains