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marysya [2.9K]
3 years ago
6

Aldosterone

Biology
2 answers:
Angelina_Jolie [31]3 years ago
5 0
A. increases blood sodium levels
Alexandra [31]3 years ago
4 0
I think d is the correct answer or not
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The calcium ions binds to troponin, the troponin changes its shape. The change in shape will remove tropomyosin from the binding sites allowing myosin to bind on the actin leading to muscle contraction.

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