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Twelfth Grade (Grade 12) Respiration, Digestion, and Excretion Questions

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Grade 12 Respiration, Digestion, and Excretion
The main functions of the digestive system are
  1. ingestion and digestion
  2. propulsion and secretion
  3. absorption and elimination
  4. all of the above
Grade 12 Respiration, Digestion, and Excretion
Inhalation in humans is achieved by
  1. contraction of muscles in the lungs.
  2. contraction of the lungs.
  3. relaxation of the diaphragm and muscles between the ribs.
  4. contraction of the diaphragm and muscles between the ribs.
  5. relaxation of the diaphragm and contraction of the muscles between the ribs.
Grade 12 Respiration, Digestion, and Excretion
During exhalation in a typical young adult human,
  1. the diaphragm contracts and flattens, moving downward.
  2. the rib cage returns to a resting position.
  3. alveolar pressure becomes lower than atmospheric pressure.
  4. the volume of the chest cavity increases.
  5. the lungs expand.
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
All of the following are true regarding the functioning of the human kidney except
  1. The initial filtrate has composition identical to blood plasma but without the large proteins
  2. Filtration by the glomerulus is performed under high pressure
  3. The nephron actively secretes water into the medulla to concentrate urine.
  4. Reabsorption of most nutrients and some salts occurs in the proximal tubule
  5. The functioning of the kidney is affected by ADH (antidiuretic hormone) and PTH (parathyroid hormone).
Grade 12 Respiration, Digestion, and Excretion
The Nephron is the functional unit of what organ?
  1. Brain
  2. Liver
  3. Pancreas
  4. Kidney
  5. Heart
Grade 12 Respiration, Digestion, and Excretion
The kidneys and urethra are part of which organ system?
  1. Skeletal
  2. Digestive
  3. Urinary
  4. Reproductive
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
Normal urine characteristics include all of the following except
  1. cloudy urine
  2. pale yellow to amber in color
  3. acidic pH
  4. clear
Grade 12 Respiration, Digestion, and Excretion
What is the optimum pH and temperature for trypsin?
  1. pH 2, 40 c
  2. pH 3, 37 c
  3. pH 8, 37 c
  4. pH 7, 40 c
Grade 12 Respiration, Digestion, and Excretion
Name three parts of the digestive system.
  1. Large Intestine, Esophagus, Lungs
  2. Stomach, Skin, Mouth
  3. Rectum, Heart, Stomach
  4. Mouth, Small Intestine, Esophagus
Grade 12 Respiration, Digestion, and Excretion
How do oxygen and carbon dioxide cross capillary walls in the alveoli?
  1. endocytosis
  2. osmosis
  3. pinocytosis
  4. diffusion
  5. phagocytosis
Grade 12 Respiration, Digestion, and Excretion
Where is pepsin located?
  1. Lungs
  2. Small Intestines
  3. Stomach
  4. Large Intestines
Grade 12 Respiration, Digestion, and Excretion
What does the respiratory system do?
  1. Pumps blood throughout the body
  2. Takes oxygen in and exchanges it for carbon dioxide
  3. Gives the body nutrients
  4. Makes babies
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
The digestive system is a group of organs that work together to                                       .
  1. take in oxygen and give carbon dioxide
  2. convert food into energy
  3. give the body shape
  4. all of the above
Grade 12 Respiration, Digestion, and Excretion
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