TASK DEFINITION: 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.
PROBLEM: Question: How do prokaryotic organisms reproduce asexually? Answer: binary fission

SOLUTION: Prokaryotic organisms reproduce asexually through binary fission.

PROBLEM: Question: What do muscles need to contract? Answer: stimulus

SOLUTION: Muscles need stimulus to contract.

PROBLEM: Question: What helps to regulate consciousness, arousal, and sleep states? Answer: thalamus

SOLUTION:
The thalamus helps to regulate consciousness, arousal, and sleep states.