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1.3 Studying Life

1.3 Studying Life. Biology = the study of life Bios = life | ology = study of. 8 Characteristics. The cell - the smallest unit of life Unicellular = 1 celled Multicellular =many celled. 2. Reproduction Sexual = DNA from 2 different parents Asexual = single parent (cloning, budding).

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1.3 Studying Life

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  1. 1.3 Studying Life Biology = the study of life Bios = life | ology = study of

  2. 8 Characteristics • The cell - the smallest unit of life Unicellular = 1 celled Multicellular =many celled

  3. 2. Reproduction Sexual = DNA from 2 different parents Asexual = single parent (cloning, budding)

  4. 3. Genetic Code – directions for inheritance (DNA)

  5. 4.  Growth and Development Growth = getting larger Development = changing shape and structure Differentiation = cells look different and perform different functions

  6. 5.  Use Energy Metabolism = chemical reactions in the body Animals eat to obtain energy  Plants photosynthesize

  7. 6. Response to environment Stimulus = a signal Response = a reaction

  8. 7.  Internal Balance Homeostasis – maintaining constant internal conditions (sameness) 8. Evolution - species change over time

  9. Branches of Biology Zoology = animals Paleontology = ancient life Cytology = cells Botany = plants Entomology = insects You guess… Microbiology = Ecology = Anthropology =

  10. Levels of Organization Molecule Cell Tissue Organ Organ Systems Organisms Population Community Ecosystem Biosphere

  11. CHECK FOR UNDERSTANDING 1. There are _________ characteristics of life 2. The smallest unit of life is the ___________ 3. All living things must be able to ____________________, or to make more of their own kind. 4. All living things have a _____________________, which are like instructions for building the body 5. During development, some cells become liver cells, some become skin cells and some become muscle cells. This process is called ________________________ 6. Animals get their _______________ by consuming food. Plants get it by __________________________________ 7. __________________________ is the maintaining of an internal balance, or sameness 8. ______________________ is the process where species change over time.

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