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Catalyst University
Biotechniques | Principles of Gel Extraction
As always, the steps of a Gel Extraction depend on your specific lab and protocol. This vide will give you a general idea regarding when one would utilize a gel extraction and the general steps.
Catalyst University
Digestion, Absorption, & Handling of Vitamin B12 (Cobalamin)
B12 (cobalamin) is a water soluble B vitamin that requires special handling upon ingesting and subsequent absorption and transport. Here, we discuss the general pathway.
Catalyst University
What are the Physiological Mechanisms of Dietary Fiber?
We have all heard that dietary fiber is necessary for good GI and overall health. Human intestinal cells do not have enzymes to break down fiber, so how could this be? Here we will discuss the role of bacteria in fiber metabolism and...
Catalyst University
The Coronavirus Replication Cycle
In this video, I explain how the Coronavirus (COVID-19) infects and replicates inside the host’s cells.
Catalyst University
The Biosynthesis of Ketone Bodies | Pathway & Explanation
This video explains how the liver manufactures the three ketone bodies (beta-hydroxybutyrate, acetoacetate, and acetone). We will explore the biosynthetic pathway here.<br/>
Catalyst University
Prions | Mad Cow Disease & Variant Creutzfeldt-Jakob Disease (vCJD)
In this video, I discuss the mechanism of propagation and development of Variant Creutzfeldt-Jakob Disease (vCJD), the human form of Mad Cow Disease (bovine spongiform encephalopathy) which is conferred from infected cows.<br/>
Catalyst University
Purpose & Organization of the Lac Operon
This video discusses in detail the purpose, functions, and organization of the Lac Operon.<br/>
Catalyst University
The Electron Transport Chain: Complexes I and II
The Electron Transport Chain: Complexes I and II
Catalyst University
Leptin Function, Signaling via the LepR, & Overall Physiological Effects
1) What is the function of Leptin in the body?<br/>
2) How is Leptin's release affected by fatty<br/> body mass?
3) How does Leptin signal through the L<br/>eptin receptor (LepR)?
2) How is Leptin's release affected by fatty<br/> body mass?
3) How does Leptin signal through the L<br/>eptin receptor (LepR)?
Catalyst University
Biotechniques | Basic Principles of Immunofluorescence (IF)
As always, the steps of Immunofluorescence depend on your lab and protocol. Here, we look at the general theory of Immunofluorescence and what it is used for in the lab.
Catalyst University
RNAi: Gene Regulation via miRNAs & siRNAs
RNAi: Gene Regulation via miRNAs & siRNAs
Catalyst University
Genetics | X-chromosome Inactivation, Barr Bodies, and the Calico Cat
X-chromosome inactivation in various sex chromosome genotypes (XX, XY, XXY, XXX, XO) and resulting Barr bodies; the Lyon hypothesis; the proposed mechanism of Calico cats
Catalyst University
ATP Synthase: Mechanism of ATP Synthesis
ATP Synthase: Mechanism of ATP Synthesis
Schooling Online
IB Biology: Cell Biology - The Cell Theory
Biology is all about cells and living organisms. But after the summer holidays, Sally can’t remember what a cell is! Why is she uploading photos on Instagram when she has an exam tomorrow? Thankfully, it’s not difficult to learn about...
Michigan Radio
Preventing Cancer at a Cellular Level
More money is spent on treating cancer than preventing it within the United States. However, scientists are getting closer to finding out if cell growth within our bodies promotes already existing cancer. Scientists are examining...
Let's Tute
Cell Organelles and Functions - Nucleus & Endoplasmic Reticulum
In this online video lecture and tutorial on Cell Biology we will learn about various components of cell like nucleus,cell organelles, endoplasmic reticulum etc. In this session we will learn about: 1) Cell Organelles 2) Cellular...
Let's Tute
Components of a Cell: An Introduction
This video explains the components of a cell, including the cell membrane, cell wall (in plant cells), and cytoplasm. It also discusses the differences between animal and plant cells and introduces the concept of cell organelles.
Let's Tute
Introduction to Biology: Exploring the Characteristics of Life
This video provides an introduction to biology, covering the characteristics of living organisms such as composition, metabolism, growth, reproduction, and evolution. The video also discusses the unifying principles of life and how to...
SciShow
Great Minds: Gregor Mendel
How would you feel if you made a huge scientific discovery, published it everywhere, and shared it with every scientist, only to have it ignored for 35 years because no one understood your genius? Unfortunately, Gregor Mendel died before...
TED-Ed
What Is Leukemia?
Leukemia afflicts children more than any other type of cancer. Pupils explore the nature of harmful mutations in cell DNA, the reproduction of damaged cells in blood and bone marrow, and their effect on normal functions of the human...
Howard Hughes Medical Institute
p53
Regulatory genes play very important roles in cell development. An animated video shows pupils an example of a regulatory gene and how p53 initiates transcription of a gene. The parts of a gene that control regulation are briefly...
Howard Hughes Medical Institute
Intracellular Infection by Salmonella
Bacteria are pesky little organisms that can often easily infect us. But how? Salmonella bacteria literally gets under our skin. Viewers see how the dangerous bacteria protects itself from defense mechanisms inside the cell.