ch. 1-3 - Shreya Maddireddy Carpenter TEXTBOOK ASSIGNMENT...

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Shreya Maddireddy Carpenter 8/10/09 TEXTBOOK ASSIGNMENT Chapter 1 1. Briefly describe the unifying themes that pervade in biological sciences. a. The Cell – the most basic unit of structure and function found in every organism. The two types are: prokaryotic cells, found in bacteria and archaea, and eukaryotic cells, found in protists, plants, fungi, and animals. Each cell is important because interaction amongst them allow the function of organisms. b. Heritable Information – biological information is passed down from parent to child in the form of DNA molecules where the genetic information is predetermine in the nucleotide sequences. This theme is important because it ensures to continuity of life of evolving more dominant species. For example, a certain trait may be passed down from father to daughter that allows for a more dominant species. c. Emergent Properties of Biological Information – the hierarchal organization from molecules to the biosphere. System properties in the higher levels are the cause of interactions within the components of the lower levels. The interaction among levels of organization allows the development of different environments and species. d. Regulation – feedback mechanisms maintain a steady state for internal factors in biological systems. A steady state of internal function allows organisms to survive, such as body temperature in a human which allows an animal to function better. e. Interaction With the Environment – organisms exchange materials and energy with their environment, both living and nonliving. Each organism is dependent on the environment and shape it in their own way. For example, the cultural mark of humans on the environment include the formation of civilizations and cities. f. Energy and Life – energy flow from sunlight to producers to consumers allow all organisms to perform energy mandatory duties. Energy allows the very function of an organism. Each process in an organisms requires energy to function . g. Unity and Diversity – the diversity of life is separated into three domains: Archaea, Bacteria, and Eukarya. The unity of life is determined by the relativity of two species that share similar characteristics or genetic code. Diversity allows different types of species to grow, and unity allows a specific dominant species to grow. h. Evolution – explains the unity and diversity found in life. The Darwinian Theory is used to explain the adaptation of animals to their environment by determining a species’ reproductive success. Evolution may be the most important theme because the adaptation of an organism is necessary to survive in a particular environment. For example, the birds that Charles Darwin studied adapted to become more efficient predators. i.
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ch. 1-3 - Shreya Maddireddy Carpenter TEXTBOOK ASSIGNMENT...

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