Curated Video
Sodium Potassium ATPase
The sodium-potassium pump uses active transport to move molecules from a high concentration to a low concentration. The sodium-potassium pump moves sodium ions out of and potassium ions into the cell. This pump is powered by ATP. For...
Professor Dave Explains
Natural Killer Cells: The Tumor Killers
Just a little bit left to go with the innate immune cells, so let's look at natural killer cells! These are cells which show cytolytic activity towards physiologically stressed cells like tumor cells and virus-infected cells. Let's break...
JJ Medicine
AKT Signaling Pathway | Regulation and Downstream Effects
Biomedical lesson on AKT (Protein Kinase B) signaling, regulation and downstream effects. The AKT signalling pathway is a highly conserved pathway that induces several important functions including glucose uptake and utilization, protein...
JJ Medicine
Ras Raf MEK ERK Signaling and the mTOR Pathway | Interactions and Regulation
Lesson on interactions between the Ras Raf MAPK and mTOR signaling pathways. Ras Raf MAPK and mTOR pathways have similar but distinct functions within the cell. During cell proliferation and growth, activation of these pathways is...
Professor Dave Explains
Bronchodilators Part 2: Mechanisms of Action
Sulbutamol (commonly known as albuterol) is a common bronchodilator used to treat asthma. In this video we will look at how this drug interacts with smooth muscle cells. We'll also learn how muscarinic receptor antagonists work....
Professor Dave Explains
Signal Transduction in Immune Cells: Receptor-Ligand Interactions
Now that we know some things about immune cell structure and function, we need to start understanding how these cells interact on the molecular level, and how signals are translated into cellular response. This means looking at...
JJ Medicine
Glycogen Metabolism | Glycogenolysis | Pathway, Enzymes and Regulation
Lesson on Glycogen Metabolism (Glycogenolysis) pathway: Step-by-step overview of the pathway, including regulation, advantages, and disadvantages of glycogenolysis, important enzymes (glycogen phosphorylase) and differences between liver...
Ancient Lights Media
Signal Transduction: Light Induced Cellular Change
Plant Physiology and Chemistry Set: 6. This clip shows how, by the process of signal transduction, light is able to bring about chemical responses that result in the expression of genes.
Professor Dave Explains
Cellular Respiration Part 1: Glycolysis
You need energy to do literally anything, even just lay still and think. Where does this energy come from? Well, food, right? But how? This is one of the most miraculous biological processes, and it happens in our bodies every moment of...
JJ Medicine
AKT Signaling Pathway: Regulation by the Insulin Signaling Cascade
Lesson on the Insulin Signaling Pathway and its Regulation of the AKT Pathway. The insulin signaling cascade is activated upon binding of insulin to the insulin receptor. Afterwards, downstream targets, including IRS1/2, become...
JJ Medicine
Insulin Signaling Cascade and Downstream Effects - Biochemistry Lesson
Learn the insulin signaling transduction cascade/pathway in this biochemistry powerpoint-style lecture! Hey guys! Here is a new video where I teach the insulin signaling pathway in a new powerpoint style lecture format. Please let me...
Professor Dave Explains
Metabolism and ATP
How does your body break down the food you eat to generate the energy you need to get through your day? What form of energy is this, anyway? Let's go over some of the basics of metabolic processes, and introduce ATP, the currency of...
Khan Academy
Khan Academy: Biology: Oxidative Phosphorylation and Chemiosmosis
An overview of chemiosmosis and oxidative phosphorylation. [4:59]
Sophia Learning
Sophia: Glycolysis: Phase One of Cellular Respiration
This lesson will describe in detail the processes that occur in the glycolysis phase of cellular respiration.
Khan Academy
Khan Academy: Regulation of Oxidative Phosphorylation
The resource from Khan Academy and the Association of American Medical Colleges provides study content for the MCAT. This resource discusses the regulation of oxidative phosphorylation.