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Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons
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Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?
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Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt
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The lungs are held to the thorax wall by the smooth muscles of the lungs. True or False...
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