Curated Video
The Transfer of Biomass in Food Chains: Efficiency and Energy Loss
This video is a lecture presentation on the transfer of biomass in food chains. The presenter explains how processes carried out by living organisms can affect the amounts of biomass and energy transferred from one trophic level to...
Schooling Online
Biology Cells as the Basis of Life: Cell Structure - Plant Cells Part 3
Sadly, it’s their last day in the Garden of Babylon. But nothing cheers up Sally like a shopping spree! The class is off to buy souvenirs before they say farewell to this wonderful city. This lesson will conclude our introduction to the...
NASA
NASA in Silicon Valley: Is There Life on Mars?
In this episode we talk about how we’re developing new tools to search for life on Mars.
Catalyst University
Do Turkey Dinners Really Make You Tired? → HERE'S WHY
In this video, we discuss the reasons why a Thanksgiving Turkey dinner leaves you feeling ready for a nap.
Curated Video
The Role of Xylem and Phloem in Plant Transport System
The video is a lecture presentation about the role of the flower and the xylem in transporting substances around plants. It explains how plants need to move substances between cells and uses specialized transport systems to do so. The...
Catalyst University
NEW! Cytochrome c and Holocytochrome c Synthase: Biochemistry and Mechanism
NEW! Cytochrome c and Holocytochrome c Synthase: Biochemistry and Mechanism
Catalyst University
Progeria, Accelerated Aging | Biochemical Mechanism of Progeria
In this video, I explain the mechanism of progeria, a rare but fatal accelerated aging disease. We will explore the synthesis pathway for normal wild-type Lamin A and the mutant form, progerin, for which the disease is named.
Schooling Online
Biology Cells as the Basis of Life: Cell Structure - Plant Cells Part 2
Sally’s field trip to the Garden of Babylon is turning into a road trip. Her first stop is the post office. It’s not every day that a stork delivers your mail! This lesson will continue unearthing the structure of plant cells, focusing...
Catalyst University
Anatomy & Physiology of the Stomach
In this video, we cover the major anatomy and physiology of the stomach.
Schooling Online
Biology Cells as the Basis of Life: Cell Structure - Animal Cells Part 3
Seeking excitement, Sally embarks on a self-guided ghost tour of Zoo York’s ‘abandoned tunnels’. Will she spot anything spooky? This lesson will finalise our crash course on the structure of animal cells, focusing on components...
Catalyst University
Exercise Physiology | BCAA Catabolism: The Basics
Exercise Physiology | BCAA Catabolism: The Basics
NASA
NASA in Silicon Valley: Brian Glass Talks About Searching For Evidence of Life On Mars
A conversation with Brian Glass, Principal Investigator of the Atacama Rover Astrobiology Drilling Studies (ARADS) project at NASA’s Ames Research Center in Silicon Valley.
NASA
Gravity Assist: Could We Find Billion-Year-Old Cholesterol? With Lindsay Hays
Could we find lipids beyond Earth? NASA astrobiologist Lindsay Hays explores this and other topics in her research. She also discusses places interesting for the search for life in our solar system and beyond.
Catalyst University
Anatomy - Hepatic Portal Circulation EXPLAINED
Here, I explain the workings of hepatic portal circulation? What vessels/organs are involved? What is its purpose?
Professor Dave Explains
Neurotransmitters Type, Structure, and Function
We know that neurotransmitters are signaling molecules that travel across the synaptic space to interact with receptors and propagate signals from one neuron to the next. But what are these molecules? What are their structures? How do...
Curated Video
Osmoregulation: Maintaining the Balance of Water and Mineral Ions in the Body
This video is about osmoregulation, which is the control of the balance of water and mineral ions in the body. The video explains the importance of maintaining the correct balance of water in cells, as cells that gain or lose too much...
Catalyst University
Overview of Metabolism [Part 2] | The Citric Acid Cycle
This video is part of a series in which we do an overview of metabolism and pathways. Specifically, this video covers the citric acid [Krebs] cycle and the basics of NADH, FADH2, and electron transport.
JJ Medicine
Gluconeogenesis Pathway: Overview, Enzymes, Co-Factors and Precursors
Gluconeogenesis Pathway lesson: An In-Depth Overview of Required Enzymes, Co-Factors and Precursors. Hey everyone! In this lesson you will learn about the gluconeogenesis pathway, including an in-depth overview of the pathway, where...
Institute of Human Anatomy
Understanding the Physiology of Stress and its Health Consequences
This video discusses the physiological response to stress, including the activation of the sympathetic nervous system and the release of cortisol. It explores how these responses evolved to deal with primitive stressors and how they can...
JJ Medicine
Lead Poisoning (Lead Toxicity) | Sources, Pathophysiology, Signs & Symptoms, Diagnosis, Treatment
Lead Poisoning (Lead Toxicity) | Sources, Pathophysiology, Signs & Symptoms, Diagnosis, Treatment Lead Poisoning (also known as Lead Toxicity) is a condition involving exposure and increased levels of lead in the blood. Lead is a heavy...
Catalyst University
Overview & Comparison of Water- vs Lipid-Soluble Hormones
This video includes a basic introduction to the endocrine system and then a comparison of the signaling between water-soluble and lipid-soluble hormones.