The diverse functions of RNA
By: Tom Barnes - 518296
RNA stands for Ribonucleic Acid. While it is one of the smallest organelles in the human body, RNA performs countless functions essential to life. RNA is a type of nucleic acid that is made up of a long strand of nucleotides. It is similar...
By: Tami Port MS
Whether you know it or not, eukaryotic cells are the tiny units of life that make up your entire body. Read on and learn more about yourself!* What Is a Cell? *Living things are constructed of cells, and these most basic units of life...
What are genetic mutations and what causes them?
By: Tami Port MS
Ever wonder why your cat has six toes? Does the latest X-Men movie leave you curious about real mutants? Here's an explanation of genetic mutations; what they are and and how they occur in nature. * The Genetic Code * Genes are units of inheritance...
Bacteria acid fast stain reaction
By: Tami Port MS
Acid fast staining involves the application of a series of dyes that leaves some bacteria pink (Acid-fast) and others purple (Nonacid-fast). In order to understand how this stain works, it is important to learn about the type of bacteria identified using the acid-fast stain.*...
Bacteria endospore stain protocol
By: Tami Port MS
Endospore staining involves application of a series of dyes. Malachite green stains the endospores and safrinin dyes vegetative cells pink. Here is the endospore stain procedure. But before discussing the procedure for staining endospores, it is important to understand what these unique structures are and...
By: Tami Port MS
* Did You Know that Bacteria Can Come Down with a Virus? *Bacteriophages (a.k.a. phages) are a type of virus that preys only upon bacterial cells. The reproduction of these parasitic acellular particles always involves death of the infected bacterium, when the viruses...
API-20E bacterial identification test strip
By: Tami Port MS
Differential stains and media can provide preliminary identification of microbes, but to identify Gram- bacteria to the species, a more sophisticated test is required.* Bacterial Identification * Differential staining of bacteria can provide preliminary information when a medical technician is attempting to identify an...
Bacterial genetics: Horizontal gene transfer
By: Tami Port MS
Although bacterial reproduction results in the generation of clones (vertical gene transfer), prokaryotes can undergo genetic recombination through the horizontal gene transfer methods of transformation, transduction, and conjugation.* Vertical Gene Transfer (VGT) *Bacteria reproduce through binary fission, a process of asexual reproduction in which...
Small scale genetic mutation: DNA insertions, deletions and frame-shifts
By: Tami Port MS
A mutation is a rare change in a gene's DNA sequence. The result of these genetic mistakes can range from no effect on the organism to the production a defective cellular protein that may have disastrous implications. Deoxyribonucleic acid (DNA), is the genetic material of...
The insect world explored
By: Jane Madera
People seem to not realize how amazing the natural world is, and how horrifying. Some of the things out there seem straight out of nightmares, like they could be the next big-bad in a newly released movie. There are insects with venom that paralyzes...

 

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