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reactions in which smaller simpler molecules joint form larger,complex molecules
simple chemical substances needed by the body in relatively small amounts for normal growth and...
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
unicellular organisms that do not have a proper nucleus or membrane bound organelles.
is a medical condition in which excess body fat has accumulated to the extent that it may have...
when the body makes its own antibodies when deliberately exposed to a dead or weakened pathogen...