An example of an analogy drawing on a scientific concept:
"It is also important to appreciate that research into how conceptual learning occurs suggests that ideally teaching should not simply be linear. So, the kind of sequences being discussed here strictly refer to the logical order of the introduction of concepts and topics which should be seen as the basis for developing teaching schemes that also admit planned, recursive, elements. We might see the sequence of topics suggested by conceptual analysis as a kind of 'primary structure' of a teaching sequence, which also has other orders of structure when examined in more detail. Indeed, we might consider an analogy with proteins where the complex shape is both critical for effective functioning in a biological system and also the outcome of the overlaying of several levels of structure."

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Many examples of science analogies are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.

Read more about this analogy: How is a well-planned curriculum like a protein?