A chemical reaction in which heat is liberated during chemical reaction is called
O a Endothermic reaction
O b. Exothermic reaction
O c. Reversible reaction
O dlirreversible reaction

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.