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Published byBrittney Palmer Modified over 9 years ago
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BIOLOGY What is biology? Biology is the study of life. What is an organism? Each individual living thing. Example: Bacteria, Paramecium, Cat, Rose etc.
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Characteristics of Living Things Cellular structure Metabolism Nutrition Growth Excretion Including nucleic acids Movement or locomotion Sensitivity or responsiveness Reproduction Capacity to evolve
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CELLULAR STRUCTURE Organism Unicellular (Single cell) Multicellular (More than one cell) Living things are made up of one or more cells. Cells are the smallest units of an organism.
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METABOLISM Cells acquire and use energy to break down, build and eliminate materials.
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NUTRITION All living things directly or indirectly depend on other organisms for energy and food sources.
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All living things grow and develop by synthesizing new molecules by using food. GROWTH
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The removal of waste materials from the cell and the body is called excretion. EXCRETION
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All living things have complex structural organization based on instructions in DNA molecules. INCLUDING NUCLEIC ACIDS
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All living things are able to move in order to provide themselves sources for their needs. MOVEMENT OR LOCOMOTION
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All living things are able to respond to changes in the environment. SENSITIVITY OR RESPONSIVENESS
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All living things reproduce and pass their heritable traits to their offsprings. REPRODUCTION
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All living things are open to changes in their DNA. These changes are called mutations that lead to evolution. CAPACITY TO EVOLVE
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The condition of a constant internal environment in an organism is called homeostasis. Ex: Regulation of blood sugar level Regulation of body temperature
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Virus Virus is a structure between living and non-living. Viruses can only live in a living organism. Chickenpox, AIDS, Hepatitis are caused by viruses.
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