Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[Q]: The long, threadlike extensions of the nerve cell help transmit nerve impulses.
[A]: Which part of the nerve cell helps transmit nerve impulses?


[Q]: Constructive forces type of forces are involved when deposited rock forms deltas or barrier islands.
[A]: What type of forces are involved when deposited rock forms deltas or barrier islands?


[Q]: We call an incorrect test result that should have been positive a(n) false negative.
[A]:
What do we call an incorrect test result that should have been positive?