Item RH002002: Four different types of nucleotides are used to make DNA molecules, not one, two, or twenty.

DNA molecules are made up of subunits called nucleotides that are linked together.  How many different types of nucleotides are used to make DNA molecules?

  1. One type
  2. Two types
  3. Four types
  4. Twenty types

Distribution of Responses

Chart showing distrubtion of responses for Item RH002002

Percent of students responding correctly

Overall45%
Grades 6–838%
Grades 9–1261%
Male42%
Female49%
Primary Language is English46%
Primary Language is not English43%

View data table