BIOA01H3 Lecture Notes - Lecture 2: Homeostasis

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Maydianne Andrade

Document Summary

Bioa01h3: life on earth unifying principles lecture 2: defining life and its origins. Properties of life: the cell is the basic unit of life, cells are adaptable with different temperatures (ex. Respond to stimuli, exhibit homeostasis, grow/develop and evolve. Display order: all forms of life (ex. A flower) are arranged in a highly ordered manner, with the cell being the fundamental unit of life. Like a hummingbird, all forms of life acquire energy from the environment and use it to maintain their highly ordered state. Reproduce: all organisms, have the ability to make more of their own kind, parasites use hosts as an environment not to reproduce. Respond to stimuli: environmental stimuli is favoured over natural selection because it connects to changes in the environment. Exhibit homeostasis: biochemical reactions occur better if there"s a good ph, glucose levels are crucially important as they could lead to diabetes.