Which statement best describes nucleic acids? a. large nitrogen-containing polymers found mainly in cell nuclei b. compounds with both carboxyl and amino functional groups c. bases that pair together in a long double helix

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.