WGU C190 Intro to Biology (Complete) Questions and Answers

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Non-living, may be within or made by a living organism. --Abiotic Living. Matter is considered ______ if it was ever alive at some point in time --Biotic Smallest level. The basic unit of matter. Co... nsists of a dense nucleus surrounded by electrons. --Atom Second level. A chemical structure consisting of at least two atoms held together by a chemical bond. --Molecule Third level. Biologically important molecules that are technically polymers. Example: DNA. --Macromolecule Fourth level. The fundamental unit of life. Essentially a tiny droplet of water and other molecules enclosed by a fluid "skin" or membrane. The smallest and simplest entity that possesses all the characteristics of life. --Cell Fifth level. Compartments inside the cell that contain specific groups of macromolecules and carry out specific cellular functions. One of these organelles is the nucleus; it encloses the DNA within the cell. --Organelle Sixth level. Single-celled life form. Consists of just one cell and include unicellular organisms such as bacteria and protists. --Microorganism Seventh level. Formed when similar cells work together to fulfill the same detailed function. --Tissue [Show More]

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