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 2 of 5 Next
Grade 12 Respiration, Digestion, and Excretion
The largest gland in the body, though in the digestive system, is the
  1. thyroid.
  2. pituitary.
  3. liver.
Grade 12 Respiration, Digestion, and Excretion
What is breathing?
  1. the exchange of gases in the mitochondria
  2. the exchange of gases in the lungs
  3. the exchange of gases in chloroplasts
  4. the exchange of gases in the mouth
Grade 12 Respiration, Digestion, and Excretion
The opening at the end of the digestive tract from which solid wastes are eliminated is the
  1. anus.
  2. esophagus.
  3. mouth.
  4. liver.
Grade 12 Respiration, Digestion, and Excretion
What is the tube that connects the mouth and stomach?
  1. epiglottis
  2. trachea
  3. esophagus
  4. appendix
Grade 12 Respiration, Digestion, and Excretion
Which normally contains the highest concentration of oxygen?
  1. body cell
  2. inhaled air
  3. air in the alveoli
  4. blood entering the lungs
  5. air leaving the lungs
Grade 12 Respiration, Digestion, and Excretion
Alveoli are tiny air sacs in the
  1. pancreas.
  2. lungs.
  3. brain.
  4. liver.
Grade 12 Respiration, Digestion, and Excretion
The urinary system functions do not include
  1. producing urine.
  2. filtering waste products from the blood.
  3. regulating the acid-base balance of the body.
  4. eliminating fecal matter from the body.
Grade 12 Respiration, Digestion, and Excretion
What is the order of passage as air is inhaled into the lungs in a typical mammal?
  1. nasal cavity, pharynx, larynx, bronchiole, bronchus, trachea, alveolus
  2. nasal cavity, larynx, pharynx, trachea, bronchus, bronchiole, alveolus
  3. nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, alveolus
  4. nasal cavity, pharynx, larynx, trachea, bronchiole, bronchus, alveolus
  5. nasal cavity, pharynx, trachea, larynx, bronchus, bronchiole, alveolus
Grade 12 Respiration, Digestion, and Excretion
Which structure is located closest to the alveoli?
  1. bronchiole
  2. larynx
  3. pharynx
  4. trachea
  5. bronchus
Grade 12 Respiration, Digestion, and Excretion
What is a common name for the trachea?
  1. windpipe
  2. throat
  3. chest
  4. diaphragm
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
Diuretics increase the flow of urine from the body.
  1. True
  2. False
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
Where is pepsin located?
  1. lungs
  2. small intestine
  3. stomach
  4. large intestine
Grade 12 Respiration, Digestion, and Excretion
This is the passage of digested products through membranes and into the body's fluids.
  1. digestion
  2. absorption
  3. circulation
  4. assimilation
Grade 12 Respiration, Digestion, and Excretion
What prevents food from entering the windpipe?
  1. epiglottis
  2. esophagus
  3. alimentary canal
  4. pancreas
Grade 12 Respiration, Digestion, and Excretion
Which statement is not true regarding the functioning of the human kidney?
  1. The initial filtrate has a 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 antidiuretic hormone (ADH) and parathyroid hormone (PTH).
Previous Page 2 of 5 Next