BOL: All site videos

BBC Secret Universe: The Hidden Life of the Cell

Mon, 23 Sep 2013 18:19:54 -0500

This will help you to understand how a cell works (C) BBC MMXII

Inner Life Of A Cell - Full Version.mkv

Mon, 23 Sep 2013 18:09:41 -0500

Работа аппарата Гольджи и ЭПС при дифференцировке лейкоцита

How DNA is Packaged (Advanced)

Mon, 23 Sep 2013 18:08:34 -0500

Each chromosome consists of one continuous thread-like molecule of DNA coiled tightly around proteins, and contains a portion of the 6,400,000,000 basepairs (DNA building blocks) that make up your DNA. Originally created for DNA Interactive ( http://www.dnai.org ). TRANSCRIPT: In this animation we'll see the remarkable way our DNA is tightly packed up to fit into the nucleus of every cell. The process starts with assembly of a nucleosome, which is formed when eight separate histone protein subunits attach to the DNA molecule. The combined tight loop of DNA and protein is the nucleosome. Six nucleosomes are coiled together and these then stack on top of each other. The end result is a fiber of packed nucleosomes known as chromatin. This structure, is then looped and further packaged using other proteins (which are not shown here) to give the final "chromosomal" shapes. It is this remarkable multiple folding which allows six feet of DNA to fit into the nucleus of each cell in our body. And a typical cell nucleus is so small that ten thousand could fit on the tip of a needle. It is important to realize that chromosomes are not always present, they form only when cells are dividing. At other times, as we can see here at the end of cell division, our DNA becomes less highly organized.)

DNA is packaged in a chromosome experiment

Mon, 23 Sep 2013 18:01:12 -0500

For more information, log on to- http://shomusbiology.weebly.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html A nucleosome is the basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around four histone protein cores.[1] This structure is often compared to thread wrapped around a spool.[2] Nucleosomes form the fundamental repeating units of eukaryotic chromatin,[3] which is used to pack the large eukaryotic genomes into the nucleus while still ensuring appropriate access to it (in mammalian cells approximately 2 m of linear DNA have to be packed into a nucleus of roughly 10 µm diameter). Nucleosomes are folded through a series of successively higher order structures to eventually form a chromosome; this both compacts DNA and creates an added layer of regulatory control, which ensures correct gene expression. Nucleosomes are thought to carry epigenetically inherited information in the form of covalent modifications of their core histones. Nucleosomes were observed as particles in the electron microscope by Don and Ada Olins [4] and their existence and structure (as histone octamers surrounded by approximately 200 base pairs of DNA) were proposed by Roger Kornberg.[5][6] The role of the nucleosome as a general gene repressor was demonstrated by Lorch et al. in vitro [7] and by Han and Grunstein in vivo.

Mathematics for Computing : Huffman Code (Tree Approach)

Fri, 20 Sep 2013 19:45:06 -0500

Determining a Huffman code for a discrete memoryless source, using the Huffman Tree algorithm

Immune response to cancer cells! AWESOME

Fri, 20 Sep 2013 06:20:47 -0500

Awesome viddeo explaining the way in which the antibody, HuLuc 63, appears to induce anti-tumor effects by binding to a protein that is only expressed on the surface of myeloma cells. This initiates antibody-dependent cellular cytotoxicity activity that kills myeloma cells and leaves healthy cells intact.

Cancer Growth Animation

Fri, 20 Sep 2013 06:16:51 -0500

This video demonstrates how cancer growth happens in human body.

Biotechnology and the Future of Humanity (Full Documentary)

Thu, 19 Sep 2013 11:12:44 -0500

Biotechnology and the Future of Humanity (Full Documentary) . 2013 This documentary as well as the rest of these documentaries shown here relate to important times and figures in history, historic places and people, archaeology, science, conspiracy theories, and education. The Topics of these video documentaries are varied and cover ancient history, Rome, Greece, Egypt, science, technology, nature, planet earth, the solar system, the universe, World wars, battles, education, biographies, television, archaeology, Illuminati, Area 51, serial killers, paranormal, supernatural, cults, government cover-ups, the law and legal matters, news and current events, corruption, martial arts, space, aliens, ufos, conspiracy theories, Annunaki, Nibiru, Nephilim, satanic rituals, religion, strange phenomenon, origins of Mankind, monsters

Report from the Genomic Medicine Working Group - Teri Manolio

Wed, 18 Sep 2013 19:35:19 -0500

September 9, 2013 - National Advisory Council for Human Genome More: http://www.genome.gov/27554864

A Tour of the Cell

Tue, 10 Sep 2013 12:01:05 -0500

Paul Andersen takes you on a tour of the cell. He starts by explaining the difference between prokaryotic and eukaryotic cells. He also explains why cells are small but not infinitely small. He also explains how the organelles work together in a similar fashion. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License