introduction

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What’s Living, what’s Non-li Composed of matter Organized in atoms Living on Earth Engaging metabolism Engaging reprodution !N" present Composed of matter Organized in atoms Living on Earth Not engaging metabolism Not engaging reprodution !N" absent Non-Living Living

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BIO 181

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  • Whats Living, whats Non-livingComposed of matterOrganized in atomsLiving on EarthEngaging metabolismEngaging reproductionDNA presentComposed of matterOrganized in atomsLiving on EarthNot engaging metabolismNot engaging reproductionDNA absentNon-LivingLiving

  • Whats Living, whats Non-living

    Metabolism?How living organisms master to live. Metabolism is the ability to acquire, use and transform energy in order to perform cellular functions, to grow, and to reproduce

  • Whats Living, whats Non-living

    Living on Earth?

  • Whats Living, whats Non-living

    How about viruses?

  • Whats Living, whats Non-living

    DNA present?

  • Shared Characteristics of LifeLife emerges at the level of cells, which are organized units of life

  • Shared Characteristics of Life Common Features of CellsCells can exist as independent organisms.Cells are composed of macromolecules that participate in identical or similar metabolic processes or chemical reactions.In all cells, genes are stored in DNA written in the same chemical codeAll cells use the machinery of DNA transcription and RNA translation to produce protein molecules

  • Shared Characteristics of Life Common Features of Cells

  • Shared Characteristics of Life Common Features of Cells

  • Shared Characteristics of Life Common Features of Cells

    Pancreatic Secretory Cell

  • Shared Characteristics of LifeLiving organisms are organized in a certain fashion1) Biosphere: all the environments on Earth inhabited by life2) Ecosystem: made of non-living and living components deserts, prairies3) Community: all the organisms living in a particular ecosystem4) Population: all the individuals of a specie living in a specific area human population5) Organism: an individual living entity a bird

  • Shared Characteristics of LifeLiving organisms are organized in a certain fashionAn organism is constituted by several organ systemsOrgan systems include several organsOrgans are made of different tissuesA tissue is an arrangement of cellsCell parts are made of macromolecules

  • Which group is correctly arranged according to size?Organ< organism< tissueOrgan system< organ< tissueCell< tissue< organTissue< organism< cell

  • Shared Characteristics of LifeLiving organisms are interdependentProducers (plants and other chemo- or photosynthetic organisms) are able to synthesize macromolecules that consumers will intake and digestDecomposers break down organic matter (dead or alive)

  • Shared Characteristics of LifeLiving organisms sense and respond to changeHomeostasis is the ability of an organism to maintain its internal environment conditions within tolerable limits

  • Homeostasis is the organisms ability to maintain the conditions of their internal environment within ____ limits.HighNon-tolerableTolerableLow

  • Shared Characteristics of LifeLiving organisms reproduce, grow, and mutateA mutation is an alteration of hereditary instructions. It may have an adaptative value, which may lead to diversity

  • Diversity of Life