Energy and enzymes
10 videos
0
4
AP Biology - Energy and Enzymes: Why Metabolism Matters
An introduction to metabolism, explaining chemical reactions in living organisms, thermodynamics, ATP energy, and enzyme regulation in biological systems.
0
5
AP Biology - Metabolism: Anabolism vs Catabolism
This video explains metabolism as two processes: catabolism breaks down molecules for energy, while anabolism builds new molecules using that energy in a continuous cycle.
0
1
AP Biology - Laws of Thermodynamics for Biology
This video explains the first and second laws of thermodynamics and how they apply to biological systems, including energy transformation and entropy in living organisms.
0
0
AP Biology - Gibbs Free Energy and Spontaneous Reactions
This video explains Gibbs Free Energy and how it predicts spontaneous reactions using enthalpy, entropy, and temperature in the equation ΔG = ΔH - TΔS.
0
0
AP Biology - Endergonic vs Exergonic Reactions
This video explains exergonic vs endergonic reactions (free energy) and exothermic vs endothermic reactions (heat), showing how they relate through the Gibbs free energy equation.
0
0
AP Biology - ATP: The Energy Currency of Cells
Learn how ATP works as the universal energy currency of life, storing energy in phosphate bonds and powering all cellular processes through hydrolysis.
0
0
AP Biology - Coupled Reactions: How ATP Powers the Cell
This video explains reaction coupling in cells, showing how ATP hydrolysis powers endergonic reactions like glucose phosphorylation through enzyme-mediated energy transfer.
0
0
AP Biology - How Enzymes Work
Learn how enzymes work as protein catalysts that speed up reactions by lowering activation energy using induced fit, and how temperature, pH, and substrate affect their activity.
0
0
AP Biology - Enzyme Inhibition: Competitive vs Noncompetitive
This video explains competitive and noncompetitive enzyme inhibition, showing how inhibitors block reactions differently and their real-world applications like aspirin and feedback inhibition.
0
0
AP Biology - Predicting Spontaneity with Gibbs Free Energy
Learn how the Gibbs free energy equation predicts if chemical reactions will occur spontaneously based on enthalpy, entropy, and temperature.