Parajumbles Question 6 - CAT 2021

Question

In the central nervous systems of other animal species, such a comprehensive regeneration of neurons has not yet been proven beyond doubt.

Biologists from the University of Bayreuth have discovered a uniquely rapid form of regeneration in injured neurons and their function in the central nervous system of zebrafish.

They studied the Mauthner cells, which are solely responsible for the escape behaviour of the fish, and previously regarded as incapable of regeneration.

However, their ability to regenerate crucially depends on the location of the injury.

Correct Sequence: 2341
Explanation: Sentence 2 acts as the introductory topic statement, announcing that University of Bayreuth biologists have discovered a rapid form of neuron regeneration in zebrafish. Sentence 3 narrows the scope down to the specific parameters of their test (2-3), stating they studied the Mauthner cells, which were historically thought to be incapable of healing. Sentence 4 presents a functional condition using the contrast word "However", noting that this ability to regenerate depends heavily on where the injury is located. Sentence 1 moves from the specific zebrafish experiment to a macro comparative conclusion, observing that this comprehensive regeneration hasn't been verified in other animal species.
FundaMakers Tip: Macro-to-Micro Narrative Arcs. Scientific descriptive paragraphs follow a clean blueprint: state the raw discovery (Sentence 2), clarify the exact cell or subject parameters (Sentence 3), provide the constraints found (Sentence 4), and finish with the broader biological implications across other species (Sentence 1).