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Ninth Grade (Grade 9) Respiration, Digestion, and Excretion Questions

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Grade 9 Respiration, Digestion, and Excretion
What does the pancreas do?
  1. It cleans blood.
  2. It absorbs nutrients.
  3. It releases powerful digestive enzymes into the small intestine to aid in the digestion of food.
  4. It releases the hormones insulin and glucagon into the bloodstream.
Grade 9 Respiration, Digestion, and Excretion
Which best describes the function of the body system shown in the diagram?
Digestive System
  1. pathogen and disease defense
  2. hormone secretion and body regulation
  3. nutrient absorption and waste excretion
  4. oxygen delivery and carbon dioxide removal
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
Which organ stores bile?
  1. The pancreas
  2. The liver
  3. The gall bladder
  4. The spleen
Grade 9 Respiration, Digestion, and Excretion
The stomach
  1. is a large, muscular sac.
  2. is opened and closed by a muscular ring.
  3. is located at the bottom of the esophagus.
  4. digests and absorbs food in the body.
  5. both a) and c) are correct.
  6. all of the above are correct.
Grade 9 Respiration, Digestion, and Excretion
Which of the following is the last section of the colon and is responsible for elimination?
  1. The jejunum
  2. The descending colon
  3. The ascending colon
  4. The rectum
Grade 9 Respiration, Digestion, and Excretion
The stomach breaks down which macromolecule?
  1. fats
  2. proteins
  3. vitamins
  4. carbohydrates
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
Enzymes in the saliva begin the digestion of
  1. starch.
  2. protein.
  3. fat.
  4. acids.
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
The large intestine
  1. absorbs and eliminates blood.
  2. is located between the small intestine and the anus.
  3. is a long narrow tube about 4-5 meters long.
  4. both a) and b) are correct.
Grade 9 Respiration, Digestion, and Excretion
Where is bile released?
  1. The large intestine
  2. The small intestine
  3. The heart
  4. The liver
  5. The pancreas
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
What process gets rid of liquid and gaseous waste products?
  1. Synthesis
  2. Reproduction
  3. Excretion
  4. Metabolism
Grade 9 Respiration, Digestion, and Excretion
Which organ has the main function of rebsorbing water?
  1. The pancreas
  2. The small instestine
  3. The large intestine
  4. The spleen
Grade 9 Respiration, Digestion, and Excretion
The term "alveoli" describes
  1. branches within the lungs
  2. small sacs found at the end of bronchioles
  3. is a long structure comprised of soft tissue, reinforced with C-shaped rings of cartilage.
  4. a muscular pump, about the size of a fist, that allows the blood to keep moving to every part of the body
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Respiration, Digestion, and Excretion
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