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homeostasis maintaining internal equilibrium 5 Characteristics of Living Things all contain DNA, grow & develop, obtain & use material and energy, reproduce, and maintain homestasis Hypothesis an educated guess Steps to focus a microscope 1.) Carry with 2 hands: one under the base, the other at the arm 2.) prepare slide 3.) place slide on stage of microscope 4.) put in nosepiece on lowest objective 5.) focus slowly Arm supports the tube & connects to the base Base Used for support Body tube connects eyepiece to objective lenses Eyepiece lense at the top that you look through Control Stays the same Job of lenses in a Microscope magnify an image Scientific Method a logical and orderly way to solve a problem Metabolism sum total of all the chemical reactions in the body Observation a hypothesis that is supported by an experimentation meter unit of length Liter unit of liquid volume Gram unit of mass Steps of Scientific Method Prediciton, Observation, Hypothesis, Experiment, Conclusion Lens X Eyepiece how to calculate the total magnification of a microscope Sexual A mode of reproduction involving the fusion of female gamete (ovum) and male gamete (spermatozoon), which forms a zygote that potentially develops into genetically distinct offspring. Asexual A form of reproduction that does not involve meiosis, ploidy reduction or fertilization, and the offspring is a clone of the parent organism.