9.2 Lesson Chemical Reactions and ATP

To ensure cells have enough energy for vital functions

To increase the size of the cell

To slow down chemical reactions

To prevent the cell from using ATP

CO2

C6H12O6

O2

ATP

The total mass of reactants equals the total mass of products.

The total number of molecules increases after the reaction.

Energy is always absorbed in a chemical reaction.

Atoms are destroyed during the reaction.

C6H12O6

O2

CO2

H2O

A reaction that requires energy input to proceed

A reaction that releases energy when bonds in products are formed

A reaction where products have more energy than reactants

A reaction that does not involve any energy change

They release energy when bonds are formed

They require an input of energy to start

They occur only in the presence of oxygen

They always produce heat as a byproduct

ATP stores energy in its phosphate bonds and releases it when needed for cellular processes.

ATP is only involved in exergonic reactions and cannot transfer energy to endergonic reactions.

ATP is a waste product of metabolism and is not used by cells.

ATP provides energy by breaking down glucose directly.