Item BF089002: Both oxygen molecules and carbon dioxide molecules move between the lungs and the blood through the walls of capillaries.

How does the functioning of the lungs affect the amount of oxygen and carbon dioxide in the blood?

  1. The lungs help increase the amount of oxygen and the amount of carbon dioxide in
    the blood.
  2. The lungs help increase the amount of oxygen and reduce the amount of carbon dioxide in the blood.
  3. The lungs help increase the amount of carbon dioxide and reduce the amount of oxygen in the blood.
  4. The lungs help reduce the amount of carbon dioxide and the amount of oxygen in
    the blood.

Distribution of Responses

Chart showing distrubtion of responses for Item BF089002

Percent of students responding correctly

Overall58%
Grades 6–854%
Grades 9–1264%
Male56%
Female61%
Primary Language is English60%
Primary Language is not English45%

View data table