Catalyst University
Anatomy - Positive & Negative Selection for Lymphocytes
In this video, we explore the basic processes of positive selection and negative selection, which select competent lymphocytes that don't attack our own self-cells.
Catalyst University
Estradiol Synthesis Theca Cells & Granulosa Cells
This video is a follow-up to the video regarding functions of LH and FSH (the gonadotropins). Here, we look at more detail regarding the synthesis of estradiol and the roles of the Theca Cells and Granulosa Cells.
Professor Dave Explains
Synthetic Biology and Materials Science Part 2: Nature-Made Plastics
In the previous tutorial we outlined the basics regarding synthetic biology as applied to materials science. We can engineer microorganisms that will produce virtually any compound we want, via a series of reactions that are catalyzed by...
Curated Video
Investigating the Effect of Surface Area on the Rate of Reaction
The video discusses the topic of investigating the effect of surface area on the rate of chemical reactions. The presenter explains the concept of collision theory and how chemical reactions occur when particles collide with each other....
Curated Video
Rates of Reaction Experiments: Investigating the Relationship between Concentration and Reaction Time
This is a lecture presentation on rates of reaction experiments. The presenter discusses the concept of the rate of a reaction and how it can be measured. The focus of the experiment is on investigating the relationship between the...
Schooling Online
IB Chemistry: Reliability Part 2
We know that Robin Hood is an accurate and reliable archer, but just how good is he? Is his aim god-like, or is he subject to the errors and imperfections of mortals? This lesson will continue investigating the concept of reliability,...
Catalyst University
A Brief History of Fat - [Part 1 3]
In this segment, we discuss the failure of modern medicine to keep up with changes in scientific thought on lipids such as cholesterol. We also discuss several modes of regulation on cholesterol levels in the body.
Curated Video
Recycling and Life Cycle Assessments: Understanding the Environmental Impact of Everyday Objects
This video is a lecture presentation discussing recycling and life cycle assessments. The speaker explores the impact that consumers and industrial producers have on the environment, particularly through the production and disposal of...
Catalyst University
Phase Diagrams | The Clausius-Clapeyron Equation [Derivation Pt. II]
In this video, I use the previously derived Clapeyron equation (previous video [link below]) to derive the Clausius-Clapeyron Equation.
Catalyst University
Lipid Biosynthesis Phospholipid Synthesis 1 Inositols & Glycerols
Lipid Biosynthesis Phospholipid Synthesis 1 Inositols & Glycerols
Catalyst University
Determine HR from an Irregular-Rhythm EKG 6-second Method
This EKG video explains how to use the 6-second method to determine HR from an irregular rhythm.
Catalyst University
Disorders of Growth Hormone Release [Excess and Deficiency]
In this video, we discuss the mechanisms of growth hormone disorders such as gigantism, dwarfism, and acromegaly.
Curated Video
Combustion of Fuels and Balancing Chemical Equations
This video provides an overview of the combustion of fuels, including what fuels are and their various uses, the differences between complete and incomplete combustion, and how to balance an equation for the combustion of a particular...
Catalyst University
Theory of Thermodynamic Activity and Ionic Strength
Theory of Thermodynamic Activity and Ionic Strength
Catalyst University
Alpha Oxidation of Branched-Chain FAs in Humans & Ruminants
In this video we discuss the following: [1] one major source of branched-chain fatty acids [2] the conversion of phytol to phytanoyl-CoA [3] alpha oxidation of phytanoyl-CoA
Curated Video
Preparation of Copper Sulfate: A Chemistry Practical Experiment
This video explains the process for preparing soluble salts through the reaction of dilute acids with soluble metals, metal oxides, metal hydroxides, or metal carbonates. The specific example of preparing copper sulfate from copper oxide...
Curated Video
Introduction to Polymers and Polymerization Processes
The video discusses the structures and properties of polymers and explores two different ways of producing them, addition polymerization and condensation polymerization. The video also highlights the difference between the two...
Catalyst University
Covalent Regulation of Glutamine Synthetase
Covalent Regulation of Glutamine Synthetase
Catalyst University
Biosignaling - G-protein-coupled Receptors PLC, DAG, & IP3
Biosignaling - G-protein-coupled Receptors PLC, DAG, & IP3
Zach Star
What is Civil Engineering?
In this video I discuss "What is civil engineering?" Most people probably know this major consists of working on bridges, buildings, dams, and so on. But you may not know that civil engineering is broken up into different subfields that...