Item BF057007: Molecules pass through the walls of microscopically small blood vessels but not through the walls of large blood vessels.

How do simple sugars, oxygen, and other molecules that are needed by cells of the body enter and exit the circulatory system?

  1. Needed molecules pass through the walls of blood vessels of any size.
  2. Needed molecules pass only through the walls of large blood vessels such as arteries
    and veins.
  3. Needed molecules pass only through the walls of microscopically small blood vessels (capillaries).
  4. Needed molecules do not pass through the walls of any blood vessels.

Distribution of Responses

Chart showing distrubtion of responses for Item BF057007

Percent of students responding correctly

Overall29%
Grades 6–828%
Grades 9–1230%
Male29%
Female28%
Primary Language is English29%
Primary Language is not English28%

View data table