BIOLOGY 151 JJC FINAL ACCURATE QUES TIONS AND ANSWERS WITH SOLUTIONS 2024 Characteristics of Life - ANSWER Energy, Metabolism, Reproduce, growth, development, reproduce, order, regulation, respond to environment, adapt by natural selection Independent Variable - ANSWER "Stands alone" research sets this up Dependent Variable - ANSWER is what is measured Virus - ANSWER - not made of cells - protein code & RNA or DNA inside -needs a host cell to replicate -can't metabolize covalent bond - ANSWER share electrons between atoms nonpolar covalent bonds - ANSWER when electrons are shared equally between atoms polar covalent bonds - ANSWER electrons are shared unequally between atoms involved radio -isotopes - ANSWER breakdown releasing radiation Top 4 elements in Human Body - ANSWER Carbon Oxygen Hydrogen Nitrogen atomic number - ANSWER number of protons atomic mass - ANSWER number of protons and neutrons
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