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Stolb23 [73]
3 years ago
12

Why do we not have many fossil records from the precambrian era?

Biology
2 answers:
maria [59]3 years ago
7 0
Most living parts didnt have bones they were single celled
Sergio [31]3 years ago
6 0
Most life-forms were single-celled, with no hard parts to fossilize.
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Hiya there!

Explanation:

ATP then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site. ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur.

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The muscle contraction cycle is triggered by calcium ions binding to the protein complex troponin, exposing the active-binding sites on the actin. As soon as the actin-binding sites are uncovered, the high-energy myosin head bridges the gap, forming a cross-bridge.

Credit sourced from "bio.libretexts.org"

Hope this <em><u>Helped!</u></em> :D

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I hope you find this information usefula nd interesting! Good luck!

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