BIO203 - Chapter 1 Summary

BIO203 - Chapter 1 Summary - CHAPTER 1 SUMMARY Introduction...

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Introduction •Physiology is the study of biological functions, which at the highest level include self- organization using energy and raw materials from the surroundings, maintaining integrity in the face of disturbances ( homeostasis) , and reproduction. •Physiology is the result of evolution. Consequently, there are two levels of scientific explanation for biological functions: the mechanistic (or “how it works”), and the evolutionary (“how did it get to be this way?”). Teleological explanations for physiological processes assume that every organismal feature is an adaptation with a useful purpose. This is often a valid approach, but because of the constraints of evolution, not all features are logical or optimized. •Physiology is inherently integrative, requiring knowledge of physics, chemistry, genomics and molecular biology, anatomy, and evolution. •Comparative physiology provides broad insights into understanding life’s functions by studying all types of organisms. Methods in Physiology •The hypothetico-deductive method is the most widely accepted version of “the scientific method.” It consists of asking questions and making initial discoveries, proposing testable and falsifiable explanations called hypotheses, then making predictions from those hypotheses and testing the predictions. •Physiological experiments use techniques from the molecular to the behavior level in order to integrate organismal functions across all levels of biology. . Levels of Organization in Organisms
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BIO203 - Chapter 1 Summary - CHAPTER 1 SUMMARY Introduction...

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