PPT-AP Biology 1 Homeostasis and Evolution

Homeostasis 2 Homeostasis is the way an organism maintains a stable internal environment within itself Body systems coordinate their activities to maintain homeostasis This is done through the use of positive and negative feedback loops . E. Evolution is a slow, gradual process by which life has developed from non-living material into animal and plant life through random natural selection.. . . 1. In the beginning God created the heavens and the earth. AP Biology. Homeostasis and the Environment. So far, we have looked at how homeostasis controls and regulates our bodies (removal of nitrogenous waste, immune system). . While these are good examples of homeostasis, they are at an organism or cellular level. . Homeostasis. Homeostasis is the maintenance of a . stable internal environment.. Homeostasis. Homeostasis represents a state of . DYNAMIC EQUILIBRIUM.. Homeostasis. Homeostasis represents a state of . 12.1. Learning Objectives. Define homeostasis. Explain the importance of homeostasis. Describe how control mechanisms work. Explain how control mechanisms are co-ordinated. Success Criteria. You can define homeostasis and suggest what things need to be maintained in the body. Macroevolution/Microevolution. Macroevolution- One g. roup of animals. evolves into another….due to . large. scale changes that take place over . long. . periods of time.. . Microevolution- . Small. The Human Body. An IRSC . L. ive Virtual Lesson. By: Diana Lenartiene, Ed. S. . The biological definition of homeostasis is “the tendency of an organism or cell to regulate its internal environment and maintain equilibrium, usually by a system of feedback controls, so as to stabilize health and functioning”. Generally, the body is in homeostasis when it’s needs are met and it’s functioning properly.. Evidence from around the world, experimentation, geology, fossils, discussion with other scientists (Alfred Wallace) lead to:. Theory of evolution . (Biology only). Charles. Darwin ‘On the Origin of the Species’ (1859). Leonard Brand. Professor of Biology and Paleontology. Department of Earth and Biological Sciences. Loma Linda University. Goal of this talk:. Evaluate the current state of the evidence for the evolution of life forms by random mutation and natural selection. stable internal environment.. Homeostasis. Homeostasis represents a state of . DYNAMIC EQUILIBRIUM.. Homeostasis. Homeostasis represents a state of . DYNAMIC EQUILIBRIUM.. . This means that adjustments are always being made to keep the variables within an . I. Evolution and Evolutionary. Evolution—change in gene frequency in a population over time. Change must be genetic. Occurs in a population—not individuals. Time depends on how fast environment changes and how fast organisms reproduce. Mike Riddle. m.riddle@verizon.net. www.train2equip.com. www.icr.org. Topics. A history of apemen – the track record. Two case studies. Neandertals. Australopithecines and Lucy. How evolution hinders critical thinking. Unit 1 – Microbial life. Unit 1 – Microbial life. Unit 2 – Animal biology. Unit 2 – Animal biology. Unit 2 – Animal biology. Unit 3 – Plant biology. Early life on Earth. Respiration & diffusion. and Variation . What is Evolution?. Simply… a change in living organisms over time. Why study evolution?. Evolutionary concepts provide a solid foundation to much of modern biology. - . you can’t fully understand current trends in biology or you will have difficulty understanding evolution. Homeostasis –. Necessary Life Functions. What defines all living organisms?. Maintain. . boundaries. Movement. Locomotion. Movement of substances. Responsiveness. Ability to sense changes & react.