Want to see correct answers?
Login or join for free!
  Biology Worksheets
Looking for Biology worksheets?
Check out our pre-made Biology worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 12 questions. View questions in All Grades.

Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College Continuing Education

Browse Questions

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

You can create printable tests and worksheets from these Grade 12 Respiration, Digestion, and Excretion questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 1 of 5 Next
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
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
The function of the digestive system is
  1. elimination and expulsion.
  2. digestion and absorption.
  3. absorption and elimination.
  4. circulation and excretion.
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
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
Which digestive organ mechanically and chemically transforms a food bolus into chyme?
  1. esophagus
  2. small intestine
  3. large intestine
  4. stomach
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
What does the enzyme trypsin, which is created by the pancreas, help to break down?
  1. proteins
  2. carbohydrates
  3. lipids
  4. starch
Grade 12 Respiration, Digestion, and Excretion
What is the function of the cilia found in the respiratory system function?
  1. bring air into the lungs
  2. initiate the coughing reflex
  3. force air out of the lungs
  4. move mucus towards the glottis
Grade 12 Respiration, Digestion, and Excretion
Trypsin has a pH of what?
  1. 4
  2. 5
  3. 7
  4. 8
Grade 12 Respiration, Digestion, and Excretion
What does an increase in the rate of contractions of the diaphragm and rib muscles indicate?
  1. decreased reduced hemoglobin in the blood
  2. decreased hydrogen ion concentration
  3. increased concentration of oxyhemoglobin in the blood
  4. increased concentration of bicarbonate ion in the blood
Grade 12 Respiration, Digestion, and Excretion
Which organ is the longest section of the digestive tube?
  1. small intestine
  2. stomach
  3. large intestine
Grade 12 Respiration, Digestion, and Excretion
What is the role of the small intestine during the digestion process?
  1. absorbs water, mineral, salts, and vitamins
  2. secretes mucus to aid in the movement of feces
  3. completes food digestion and nutrients absorbed into the bloodstream
  4. none of the above
Grade 12 Respiration, Digestion, and Excretion
The passage of urine from the bladder to the outside of the body is specifically called                .
  1. urination
  2. elimination
  3. expulsion
  4. absorption
Grade 12 Respiration, Digestion, and Excretion
The prominent folds of the mucosa that nearly disappear when the stomach expands are the                  .
  1. gastric pits
  2. rugae
  3. plicae circularis
  4. omenta
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.
Previous Page 1 of 5 Next