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
Students Responding Correctly
Group Correct Total Percent
Overall 869 3008 29%
Grades
  6–8 523 1856 28%
  9–12 343 1137 30%
Gender
  Male426144929%
  Female424150328%
Primary Language
  English792272129%
  Other6021728%

View data table