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valkas [14]
3 years ago
15

Where can electrical signals that cause the heart to beat originate from

Biology
1 answer:
Ierofanga [76]3 years ago
5 0

Answer:

SA node (sinoatrial node)

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The DNA is more closer to bacteria.

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Mitochondria and chloroplast are considered as semi-autonomous organelle because they contain their own genetic material. The mitochondria and chloroplast evolution can be explained by the endosymbiont theory.

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What is a decomposition reaction called in biology
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