Bio Notes.docx - Biology Notes Biology is the study of life...

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Biology Notes: Biology is the study of life Life is recognized by what living things do There are many properties of life such as: order, evolutionary adaptation, response to the environment, regulation, energy processing, growth and development, and finally reproduction. The study of life is studied from the microscope scale of molecules and cells to the global scale of the entire living planet The hierarchy of life is: from the biosphere to organisms and cells to molecules. Organisms interact with their environment. Both the organizing and environment are affected by these interactions Dynamics of any ecosystem include 2 major processes which include cycling of nutrients (where all nutrients from plants goes back into the soil(when it dies)) and the flow of energy from sunlight to producers to consumers. Organisms need to perform work which depends on an energy source, the exchange of energy, and transformation of one energy form to another Energy flows through an ecosystem, usually entering as sunlight and exiting as heat A cell is the lowest level of organization that can perform all activities required for life Cells contain chromosomes made partly of DNA, which programs the cell production of proteins and transmit information from parents to offspring A DNA double helix is two long chains of blocks called nucleotides, which in 3D is a double helix A single strand of DNA geometric shapes and letters are simple symbols for the nucleotides in a small section of one chain of a DNA molecule. Genetic information is encoded in specific sequences of the four types of nucleotides.
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