AP Bio Insta-Review Topic 3.4*: Cellular Energy

Front

What is the First Law of Thermodynamics?

Back

Energy cannot be created or destroyed, only transferred or transformed.

Front

What happens to energy when it is lost in a biological system?

Back

Loss of energy results in death.

Front

What type of reaction is characterized by the release of energy?

Back

Exergonic reaction.

Front

What molecule is primarily responsible for powering cellular processes?

Back

ATP (Adenosine Triphosphate).

Front

What characterizes an endergonic reaction?

Back

Positive ΔG, nonspontaneous.

Front

What is ATP and why is it important?

Back

ATP (Adenosine Triphosphate) is the energy currency of the cell, used to power various cellular processes.

Front

What is the Second Law of Thermodynamics?

Back

In any energy transfer, the total entropy of a closed system can only increase.

Front

What is an example of an exergonic reaction?

Back

Cellular respiration, where glucose is broken down to release energy.

Front

What does ΔG represent in thermodynamics?

Back

ΔG represents the change in free energy during a reaction.

Front

What is metabolism?

Back

Metabolism is the sum of all chemical reactions that occur within a living organism.