Kinesin and dynein proteins act as mechanical nanoscale engines, walking along microtubules to deliver cellular cargo. Cellular Mechanobiology
Realigning daily tasks with overarching career objectives to eliminate wasted effort. Roadblocks, negative self-talk, and systemic obstacles
How do molecular motors achieve near 100% efficiency? The physics of living systems seeks to quantify these bioenergetic pathways using the same rigorous calculus applied to industrial thermodynamics. 3. Mathematical Modeling of Biological Complexity
: Look for academic databases like Google Scholar, ResearchGate, or Academia.edu. Researchers often share PDFs of their published works on these platforms.
: Examines how personal energy is spent and replenished in professional contexts.
The central thesis of Amundson’s work revolves around the second law of thermodynamics, which states that the entropy (disorder) of an isolated system always increases. At first glance, this law appears to contradict the existence of life. Living organisms are highly ordered, structured, and complex systems. If the universe trends toward chaos, how can complex organisms exist and evolve? Amundson addresses this paradox by clarifying the definition of a biological system. Organisms are not isolated systems; they are open systems. They exist in a state of non-equilibrium, constantly exchanging matter and energy with their environment. Amundson argues that life does not violate the second law but rather utilizes energy to maintain a low-entropy state, effectively "exporting" entropy to the surroundings in the form of heat and waste products. Thus, the existence of order is paid for by the degradation of energy quality elsewhere.
Life escapes thermodynamic death by being an open system. Organisms continuously consume energy from their environment (like sunlight or nutrients) and dissipate heat back into it.
While the full PDF of "The Physics of Living" is not freely available online due to copyright protection, there are several legitimate ways to access the book: