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If the protein hormone insulin from seve...

If the protein hormone insulin from several mammalian species has similar activity in regulating sugar metabolism when injected into another species,which of the following is most appropriate?

A

Primary structures of insulin from different species are identical.

B

Somewhat different amino acid sequences may yield similar 3-dimensional conformations.

C

Three-dimensional conformation has little relation to biological activity.

D

None of these

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