Which free-living cells were the earliest contributors to the formation of Earthʹs oxidizing atmosphere?

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#Question id: 10692

#SCPH28 | Zoology

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#Question id: 655

#SCPH06 I Botany

A change from one conformation of a molecule to another involves ________.

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#Question id: 2074

#SCPH01 Biochemistry

In some cells, there are many ion electrochemical gradients across the plasma membrane even though there are usually only one or two proton pumps present in the membrane. The gradients of the other ions are most likely accounted for by:

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#Question id: 3642

#SCPH01 Biochemistry

Any piece of DNA which replicates as a single unit is called

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#Question id: 2956

#SCPH28 | Zoology

The product of the cdc2 gene is