Thermodynamics

Definition

Thermodynamics is the study of energy and its transformations. It explains how energy is transferred between systems and surroundings, crucial for understanding biological processes.

5 Must Know Facts For Your Next Test

1. The First Law of Thermodynamics states that energy cannot be created or destroyed, only transformed.
2. The Second Law of Thermodynamics states that entropy, or disorder, in a system always increases over time.
3. In biological systems, thermodynamics helps explain metabolic pathways and energy transfer.
4. Enzymes help lower the activation energy required for biochemical reactions, aligning with thermodynamic principles.
5. ATP (adenosine triphosphate) is a central molecule in cellular energy transfer.

Review Questions

• What does the First Law of Thermodynamics state about energy?
• How does the Second Law of Thermodynamics relate to entropy?
• Why is ATP important in biological systems?

Related terms

Entropy:

A measure of disorder or randomness in a system.

Metabolism: The set of life-sustaining chemical reactions in organisms.

Enzyme: A protein that acts as a catalyst to speed up chemical reactions without being consumed.