A problem with the basic Oparin-Haldane model for the origin of life (though not necessarily an unsolvable one)is that ________.

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The Oparin-Haldane model, which proposes that life originated from organic compounds in a "primordial soup," faces several challenges: it doesn't account for the origin of chirality (the preference for molecules of a particular orientation), recent evidence suggests the early Earth's atmosphere wasn't as reducing as the model assumes, it overlooks the need for chemical activation of monomers before they can form polymers, and it doesn't address the non-specific ways purine bases can attach to sugars.

A Problem with the Basic Oparin-Haldane Model for the Origin