Answer:
conformational change in troponin
Explanation:
The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.
<span>This is invalidate, because the amount of energy should stay constant.</span>
The first invertebrates to show both segmentation and a complete digestive system belong to the phylum Annelida that includes earthworms, leech, sandworms, etc.
These segmented worms have complete digestive system which is also known as tube-within a tube. These can be found in freshwater, marine water or can even be terrestrial.
