BioTest1Objectives.docx

BioTest1Objectives.docx - Overarching question How do...

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° Overarching question: How do living systems survive long enough to reproduce? ° Unit 1: An Introduction to Life, its Study and Chemical Unity ° Focus QUESTION: What characterizes living things and their study? ° Readings: Chapters 1-3 ° ° ° ° Objectives: As a result of their studies in this unit, student should be able to: ° ° Describe the characteristics of living systems Cellular organization Made up of 1+ cells bounded by membrane Homeostasis Maintains constant internal conditions different from environment Ordered complexity Complex with many different kinds of cells and highly ordered Sensitivity Respond to stimuli, evoking specific functional rxn Energy utilization Take in energy and use to do work Growth, development, and reproduction Capable of growing and reproducing, and possess hereditary molecules to pass to offspring of same species Evolutionary adaption Interact with other biotic & abiotic factors that influence their survival, and evolve to adapt to environment Contrast living and non-living systems If all the characteristics of living systems were not present, that would differentiate the system as non-living? Recognize how organisms use energy and matter to form living structures and perform life processes. All organisms need food as source of molecules to provide chemical energy and building materials Plants make their own food in form of sugar molecules Fight against entropy (2nd Law of Thermodynamics, entropy increases, energy becomes more disordered) Organisms must work against that to maintain order within body structures ex) Respiration in which carbs are metabolized to generate energy for work Photosynthesis in which producers use energy of sunlight to create carbs Recognize the multiple levels of biological organization that energy and matter interact within, from cells to organisms to ecosystems. Cells Atoms joined together into clusters of molecules These join together to make organelles within cells Basic unit of life Organism Made up of tissues, organs and organ system
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Tissues: groups of similar cells acting as functional unit Organs: Body structure composed of different tissue for structure and functional unit Ecosystem Highest tier of biological organization Biological community and physical habitat Biotic + Abiotic factors combined Emergent properties New properties emerge from each new level of organization Result from interaction of energy and matter btwn smaller components Identify the components of natural selection Variation Organisms within populations exhibit individual variation in appearance and behavior.
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