Identify the INCORRECT statement about the human brain: MCQ with Answer and Explanation

Explanation:
Galanin is a 29-amino acid neuropeptide that is co-localized with several other neurotransmitters and hormones. In the central nervous system, it is involved in various functions, including the inhibition of acetylcholine release and modulation of pain. In the gastrointestinal tract and pancreas, its primary functions are inhibitory: it inhibits the release of both insulin and glucagon from the pancreatic islets, inhibits gastric emptying and gastric acid secretion, and generally inhibits intestinal motility and secretion. It acts to slow down digestion and nutrient absorption.

Explanation:
RNA polymerase binds to the promoter region of DNA and synthesizes a complementary RNA strand during transcription. DNA polymerase synthesizes DNA, ligase joins DNA fragments, helicase unwinds DNA.

Explanation:
The Competitive Exclusion Principle, formulated by G.F. Gause based on his experiments with Paramecium, states that two species with identical ecological niches (competing for the exact same limited resources) cannot coexist indefinitely in the same habitat. One species will inevitably have a slight reproductive advantage and will outcompete the other, leading to the local extinction or evolutionary shift (resource partitioning) of the inferior competitor.