5 Written Questions

1. Food passageway between mouth and stomach.
2. bromthymol blue a chemical indicator that changes its appearance when co2 is in it
3. Tiny sac-like air spaces in the lung where carbon dioxide and oxygen are exchanged.
4. The main organs of the respiratory system.
5. The fluid released in your mouth that begins the chemical breakdown process.

5 Matching Questions

1. Digestive System
2. Chemical Breakdown
3. Nutrients
4. co2
5. indicator

1. a the gas that is produced when o2 is used to access energy from nutrients the respirtory system removes it
2. b chemical that changes its appearance in different types of solutions
3. c The substances in food that give the raw material and the energy needed by the body
4. d Takes food into the body, breaks down food, and absorbs the digestive material.
5. e Chemicals produced by the body break food into their chemical building blocks (saliva in mouth, digestive chemicals in stomach and small intestines).

5 Multiple Choice Questions

1. Absorbs water into the blood stream and prepares undigested food for elimination.
   1. large intestine
   2. Organ System
   3. Nutrients
   4. Small Intestine
2. The process by which nutrient molecules pass through the wall of the digestive system and into the blood.
   1. btb
   2. indicator
   3. blood
   4. Absorption
3. Removes liquid waste from the body(includes the kidneys and bladder).
   1. Excretory System
   2. circulatory system
   3. Organ System
   4. Respiratory System
4. Receives food, churns it, and adds hydrochloric acid.
   1. o2
   2. Stomach
   3. blood
   4. trachea
5. a hollow muscular organ that pumps blood throughout the body
   1. heart
   2. Teeth
   3. o2
   4. lungs

5 True/False Question

1. Model → The gas that is inhaled through the respiratory system and that is required to access energy from the nutrients that gets absorbed from the digestive system.
   

   True        False

2. Small Intestine → Absorbs useable nutrients which are sent to all body parts by blood vessels.
   

   True        False

3. Respiratory System → Removes liquid waste from the body(includes the kidneys and bladder).
   

   True        False

4. trachea → Receives food, churns it, and adds hydrochloric acid.
   

   True        False

5. blood → functions carrying gases (co2 and o2) nutrients and waste around the body
   

   True        False