PBS
Could Life Evolve Inside Stars?
One of the most bizarre proposals for life not as we know it doesn’t even use atoms. It proposes that fundamental kinks and defects in the fabric of the universe - cosmic strings beaded with magnetic monopoles - may evolve into complex...
Bozeman Science
AP Biology Practice 7 - Connecting Knowledge
In this video Paul Andersen explains the final AP Biology practice on connecting knowledge. The video begins with an introduction to interdisciplinary studies and how science is changing over time. He describes differences of scale in...
Bozeman Science
Bioenergetics
Paul Andersen introduces the concept of bioenergetics. He explains how living organisms utilize free energy in the Universe. He begins with a brief discussion of thermodynamics and Gibbs free energy. He then explains how reactions can be...
Bozeman Science
AP Biology Science Practice 1: Models and Representations
In this video Paul Andersen explains the importance of models and visual representations in an AP Biology class. Science practices are overarching skills and knowledge required to be successful in an AP Biology classroom. Models for each...
Bozeman Science
The New AP Biology Exam - A User's Guide
In this video Paul Andersen describes the new AP Biology Exam. This exam will be given for the first time in May of 2013 and will be different from all previous exams. In this video Paul Andersen describes the scoring and the two parts...
Bozeman Science
Kinetic Reaction Control
In this video Paul Andersen explains how a spontaneous process may take either the thermodynamically controlled or the kinetic controlled pathway. If the activation energy determines the path taken then the process is under kinetic...
Bozeman Science
Driving Nonspontaneous Processes
In this video Paul Andersen explains how you can drive non spontaneous processes by adding external energy (like electricity or light) or by coupling it to a spontaneous process (like the conversion of ATP to ADP)
Bozeman Science
Free Energy and the Equilibrium Constant
In this video Paul Andersen explains how thermodynamic and equilibrium reasoning can be related through changes in free energy and the equilibrium constant. When the delta G is negative the reaction shifts to the right or favors...
Bozeman Science
Photosynthesis and Respiration
Paul Andersen details the processes of photosynthesis and respiration in this video on free energy capture and storage. Autotrophs use the light reactions and the Calvin cycle to convert energy from the Sun into sugars. Autotrophs and...
Bozeman Science
Biology
Paul Andersen introduces the topic of Biology. He covers each of the four main ideas that were developed by the College Board. These ideas revolve around the concepts of evolution, free energy, information and systems.
Bozeman Science
Using Gibbs Free Energy
In this video Paul Andersen explains how you can use the Gibbs Free Energy equation to determine if a process is spontaneous or not spontaneous. If the _G is less than zero the process is spontaneous. If the _G is greater than zero the...
Bozeman Science
Activation Energy
In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of...
Bozeman Science
Life Requires Free Energy
Paul Andersen describes how free energy is used by organisms to grow, maintain order, and reproduce. A brief discussion of the first and second law of thermodynamics is also included. Disruptions in the amount of free energy can cause...
Bozeman Science
LS1C - Matter and Energy Flow in Organisms
Sustaining life requires substantial energy and matter inputs. The complex struc- tural organization of organisms accommodates the capture, transformation, trans- port, release, and elimination of the matter and energy needed to sustain...
TED Talks
William McDonough: Cradle to cradle design
Green-minded architect and designer William McDonough asks what our buildings and products would look like if designers took into account "all children, all species, for all time."
Professor Dave Explains
Introduction to Transition Metal Catalysis
After learning about the different kinds of organometallic reactions, we are ready to learn about transition metal catalysis. This is an incredible field that has pushed organic synthesis forward in leaps and bounds over the past 50...
Curated Video
Science Experiment: Potato Battery
Unleash your inner scientist with this fun and educational potato battery experiment! This DIY science experiment is perfect for curious minds wanting to learn about electricity and how it works. In this video, we'll demonstrate how to...
Curated Video
Science Experiment: Coin Battery
Dive into the fascinating world of science with everyday materials. This experiment is a thrilling educational experience that everyone can participate in. Little ones will be amazed to see an LED light up using simple items, and older...
Curated Video
How Batteries Work - Battery electricity working principle
How does a battery work, learn from the basics where we use and battery and how batteries work. With thanks to Squarespace for sponsoring this video.
Catalyst University
Adenylate Cyclase Mechanism - Inorganic Pyrophosphatase Mechanism
Adenylate Cyclase Mechanism Inorganic Pyrophosphatase Mechanism
Catalyst University
Relating Equilibrium Constants: Kp and Kc (Keq)
Relating Equilibrium Constants: Kp and Kc (Keq)
Catalyst University
Free Energy Functions: A Physiological Perspective
Free Energy Functions: A Physiological Perspective