Biology quiz Grade6 Mrs. Hadeel

1.    ............................................ is a protein that speeds up chemical reactions in the body.

• Sugar

• Mucus

• Enzyme

• Starch

2. 2. ________________: It occurs in the small intestine.

• Digestion

• Absorption

• Elimination:

3. 3. ـThe ....................................... eliminates materials that are not absorbed.

• 3. Small intestine

• 3. large intestine

• Stomach

• Mouth

4. 4. Your ................................ is where digestion begins.

• A.  Stomach

• B. mouth

• C.  small intestine

• D. large intestine

4. 5. the ....................................., digests proteins into short chains of amino acids.

• Mucus

• Saliva

• 
  Enzyme pepsin

6. 6. waves of involuntary muscle contractions, pushing food toward the stomach

• Saliva

• Epiglottis:

• Esophagus:

• Peristalsis

7. 7. The mucus kills many bacteria that you swallow with your food.                           

• True

• 7. False

8. 8. The esophagus is lined with ...................................., which makes food move easily.

• enzyme

• starch

• 8. mucus

• sugar

9. 9. Absorption is the process by which nutrient molecules pass through the wall of the digestive system into the ............................

• large intestine

• blood

10. 10. ..................................., which lines the stomach, protects the stomach from the acid.

• Hydrochloric acid

• 10. Mucus

• Enzyme pepsin