Biology 152 Lecture 1 Section 1 Lessons Help Instructor Resources About

Cell Biology > Thermodynamics



Like everything else in the universe, living things--and the cells that make them up--must abide by the laws of thermodynamics.

First Law: Energy cannot be created or destroyed, only transferred and transformed. Cells absorb energy and convert it into different forms.

Second Law: Each time energy is transferred or transformed, the entropy of the universe increases.

With each energy conversion in a cell, a significant proportion of that energy is lost as heat.


Are you ready for this lesson?

To use this lesson, you should have:

  • Read the appropriate chapter(s) in your textbook and reviewed your lecture notes on Thermodynamics

Lesson Topics


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Why Cells Need Energy Energy Conversion ATP's Role Enzymes Cellular Energy Pathways