In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[EX Q]: Question: Which state of matter has the lowest density? Answer: gases
[EX A]: Gases have the lowest density.

[EX Q]: Question: What are the light highlands of the moon called? Answer: terrae
[EX A]: Terrae are the light highlands of the moon called.

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