This animation demonstrates how DNA microarray experiments are performed. One common use of microarrays is to determine which genes are activated and which are repressed when two populations of cells are compared. Every gene is measured simultaneously. As an example, we'll compare what happens to yeast genes when cells are grown in aerobic versus anaerobic conditions.
Paul Andersen introduces the nucleic acids of life; RNA and DNA. He details the history of DNA from Griffith, to Avery, to Hershey and finally to Watson and Crick. He also details the difference between prokaryotic and eukaryotic chromosomes.
Paul Andersen continues his description of DNA and RNA. He begins with the structure of DNA and RNA and moves into the process of DNA Replication. He also describes the central dogma of biology explaining how DNA is transcribed to mRNA and is finally translated into proteins.
Paul Andersen explains how DNA replication ensures that each cell formed during the cell cycle has an exact copy of the DNA. He describes the Meselson-Stahl experiment and how it showed that DNA copies itself through a semi-conservative process. He then explains how multiple enzymes, like DNA polymerase, helicase, primase, ligase, and single strand binding proteins copy DNA.
The "Experiments in Biotechnology" video series is a production of NCCCS BioNetwork in partnership with Haywood and Western Piedmont Community Colleges and features demonstrations of 8 laboratory experiments.
Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.
The video resource "DNA Structure and Replication: Crash Course Biology #10" is included in the "Biology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The resource "The DOM (Document Object Model)" is included in the "JS and the DOM" section of the "HTML/JS: Making webpages interactive" course from Khan Academy. Some of the topics included in this resource are: HTML, Javascript, Web Technologies.
The resource "DOM event types" is included in the "DOM events" section of the "HTML/JS: Making webpages interactive" course from Khan Academy. Some of the topics included in this resource are: HTML, Javascript, Web Technologies.
The resource"Dangling modifiers and parallel structure" is a tutorial included in the "Syntax: conventions of standard English" topic in the subject "Grammar" as listed in the Khan Academy series.
Interview with entrepreneur Danny O'Neill - President of The Roasterie.
Interview with entrepreneur Danny O'Neill - President of The Roasterie.
Interview with entrepreneur Danny O'Neill - President of The Roasterie.
Interview with entrepreneur Danny O'Neill - President of The Roasterie.
The video resource "The Dark Ages...How Dark Were They, Really?: Crash Course World History #14" is included in the "World History" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Dark Energy, Cosmology part 2: Crash Course Astronomy #43" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Dark Matter: Crash Course Astronomy #41" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
We're in Germany for a new and improved video about element 110, showing you exactly where it was created. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
In this video Paul Andersen describes the science practice of data collection. He begins with a brief description of science and the scientific method. He details concepts related to data collection in each of the four big ideas. He then walks through four different practice questions related to data collection.
Introduction to data management and reproducibility for researchers as a presentation.