This paper extends the entropy–decay framework, previously developed in physics and chemistry, into the domain of biology. It proposes that living systems can be understood as structured entropic architectures: senses as tuned receivers of propagating entropy, digestion as resonance-specific extraction of trapped entropy, and ecosystems as networks of irreversible circulation. Building on Schrödinger’s early vision of “negative entropy,” this work reinterprets perception, nutrition, and ecological balance as expressions of the same universal decay processes that govern matter and cosmology. While the framework remains at the stage of hypothesis — τ-resonance and entropic release profiles are not yet measurable — it outlines testable predictions in calorimetry, spectroscopy, and microbiome studies. The aim is not to claim a final theory, but to invite further exploration into whether biology, like physics and chemistry, may be unified under the irreversible propagation of entropy.