Biology Flashcard

Front

What are reactants in a chemical reaction?

Back

Substances that are changed during a chemical reaction.

Front

What happens when a chemical bond is broken?

Back

Energy is absorbed.

Front

What happens to the rate of an enzyme-catalyzed reaction when the substrate concentration is increased?

Back

The rate increases and then levels off.

Front

What must happen to the chemical bonds in food for the energy to be used by the body?

Back

The bonds must be broken and new bonds formed.

Front

What is the primary function of NAD+ in cellular respiration?

Back

To act as an electron carrier.

Front

Define a chemical reaction.

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is an enzyme?

Back

A protein that acts as a catalyst to speed up a chemical reaction.

Front

What is the role of ATP in cellular processes?

Back

ATP serves as the primary energy carrier in cells.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is activation energy?

Back

The minimum energy required to start a chemical reaction.