Portal:Biotechnology

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Biotechnology portal

Welcome to the biotechnology portal. Biotechnology is a technology based on biology, especially when used in agriculture, food science, and medicine.

Of the many different definitions available, the one declared by the UN Convention on Biological Diversity is one of the broadest:

"Biotechnology means any technological application that uses biological systems, living organisms, or derivatives thereof, to make or modify products or processes for specific use." (Article 2. Use of Terms)

Refresh - Edit

Directory
Basic concepts
Biotechnology fields
Genetic improvement and selection
Basic techniques and tools
Biology field Chemical engineering field
Interdisciplinary fields

edit the directory

Do you know the answers? Categories

Portal:Biotechnology/Selected questions/January

Biotechnology subcategories:

Bioinformatics - Biotechnology companies - Biotechnology law - Biotechnology products - Cell imaging - Cloning - Genetic engineering - Genetically modified organisms - Molecular genetics - Stem cells
Click the "►" below to see all subcategories:

edit

Selected article How you can collaborate

Gel de SDS-PAGE

Gel electrophoresis is a group of techniques used by scientists to separate molecules based on physical characteristics such as size, shape, or isoelectric point. Gel electrophoresis is usually performed for analytical purposes, but may be used as a preparative technique to partially purify molecules prior to use of other methods such as mass spectrometry, PCR, cloning, DNA sequencing, or immuno-blotting for further characterization.

The first part, "gel", refers to the matrix used to separate the molecules. In most cases the gel is a crosslinked polymer whose composition and porosity is chosen based on the weight and composition of the target of the analysis. When separating proteins or small nucleic acids (DNA, RNA, or oligonucleotides) the gel is usually made with different concentrations of acrylamide and a cross-linker, producing different sized mesh networks of polyacrylamide. When separating larger nucleic acids (greater than a few hundred bases), the preferred matrix is purified agarose (which is a seaweed extract). In both cases, the gel forms a solid but porous matrix that looks and feels like clear Jell-O. Acrylamide, in contrast to polyacrylamide, is a neurotoxin and needs to be handled using Good Laboratory Practices (GLP) to avoid poisoning.

  • Join up and contribute.
  • Improving and expanding a Biotechnology stub.
  • Creating an article about Biotechnology:

edit

Did you know... Help

Portal:Biotechnology/Selected anecdote/January

edit

Things you can do Web resources

edit

edit

Basics
Related portals
Issoria lathonia.jpg
Veranotrigo.jpg
Biology Agriculture and Agronomy


Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

Wikibooks
Books

Commons
Media

Wikinews 
News

Wikiquote 
Quotations

Wikisource 
Texts

Wikiversity
Learning resources

Wikivoyage 
Travel guides

Wiktionary 
Definitions

Wikidata 
Database

Wikispecies 
Species

edit

Purge server cache