Quiz #2: Laws of Thermodynamics in Biology

Which of the following best describes entropy?

• A measure of energy.

• A measure of temperature.

• A measure of order.

• A measure of chaos or disorder.

What does the First Law of Thermodynamics state?

• Energy can be created or destroyed.

• Entropy decreases in a closed system.

• Total energy in a closed system is constant.

• Energy is only transformed in open systems.

In biological terms, how do organisms interact with energy?

• They create energy from food.

• They store energy indefinitely.

• They transform energy from one form to another.

• They lose energy to the environment.

What is the relationship between a closed system and entropy?

• Closed systems cannot exist.

• Closed systems experience increasing entropy.

• Closed systems have constant entropy.

• Closed systems can create order.

What does the Second Law of Thermodynamics state?

• Energy is created in closed systems.

• Entropy always seeks to decrease.

• Entropy always seeks to increase.

• Energy is lost in open systems.

What is the Fluctuation theorem?

• Closed systems cannot exchange energy.

• Energy is always conserved.

• Entropy cannot decrease.

• Entropy can decrease in small systems over time.

What happens to a living cell without energy input?

• It creates energy.

• It decomposes.

• It thrives.

• It becomes more ordered.

What does a negative ΔG indicate?

• The reaction is at equilibrium.

• The reaction requires energy.

• The reaction is non-spontaneous.

• The reaction is spontaneous.

What is the primary source of energy for all cells?

• ATP.

• Glucose.

• Oxygen.

• Water.

What happens to glucose when it breaks down?

• It releases energy.

• It becomes more complex.

• It requires energy.

• It creates order.