PTE Reading
Re-order Paragraphs
1 questions. Answer them all, then submit once for your section score.
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1.
Re-order Paragraphs
Arrange the sentences into the correct order.
Put the sentences in the correct order:
- These findings have led several neurologists to argue that consistent, sufficient sleep should be treated as a component of long-term brain health rather than a mere lifestyle preference.
- Subsequent studies suggested that chronic sleep deprivation interrupts this cleansing cycle, allowing waste proteins to accumulate more than they otherwise would.
- Among the substances cleared through this process is beta-amyloid, a protein whose buildup has long been associated with Alzheimer's disease.
- This subtle contraction allows cerebrospinal fluid to flow more freely through the brain tissue, flushing out metabolic waste accumulated during waking hours.
- In 2013, researchers using imaging studies on mice found that brain cells shrink slightly during deep sleep, widening the gaps between them.