Hi Adeoluwa,

The questions on the Unit Tests cover different skills within the unit, so you shouldn't generally see multiple questions related to the same skill on the test within the same attempt.

Some of the skills are covered by multiple courses, such as High School Biology and AP Biology, so mastering a skill in HS Biology that is also in AP Biology will give you credit for the skill in both courses, but will only count as one skill for the mastery badges.

I hope this helps! Please let me know if you have any additional questions!