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son4ous [18]
3 years ago
6

How were the four requirements for life identified by scientists?

Biology
1 answer:
Zarrin [17]3 years ago
8 0
To be alive an organism must be able to intake nutrients, respirate, grow, and reproduce
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The subsections of a myofibril that perform muscle contraction are called
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peptide and protein hormone

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They can show  regulated secretion where the hormone is stored in vesicles for a long time and then released in large amount in bursts for a proper stimulus. Sometimes they also show constitutive secretion where they are released slowly and steadily by the vesicles.

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