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You"ve most likely seen this famed statue created by the French sculptor Auguste Rodin. Rodin"s skill as a sculptor is apparent because the frosting looks for this reason lifelike. In fact, the frosting is make of rock so its just resemblance to life is just how it appears. Exactly how does a statue make of absent differ native a living, breathing person being or other living organisms? What is life? What walk it median to be alive? Science has actually answers to this questions.



Living things have multiple levels of organization. Their molecules space organized right into one or an ext cells. A cell is the simple unit the the structure and function of living things. Cells space the structure blocks of life organisms. An typical adult person being, for example, consists of trillions of cells. Living things might appear very different indigenous one another on the outside, however their cell are very similar. To compare the human cells and onion cell in the figure below. What similarities do you see?

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metabolism, which is the structure up and also breaking down of chemical compounds. Living things can transform energy by convert chemicals and energy into cellular components. This form of management is referred to as anabolism. Castle can additionally break down, or decompose, essential matter, i m sorry is referred to as catabolism. Living points require power to maintain internal conditions (homeostasis), because that growth, and other life processes.


All life things have the capacity for growth. Expansion is rise in size that occurs when there is a higher rate that anabolism than catabolism. For example, a human being infant has readjusted dramatically in dimension by the time it will adulthood, as is apparent from the picture below. In what other ways do we change as we thrive from infancy to adulthood?