30 results found

Search Results for: unique sequence

Codon

What does codon mean? A codon, in biology, is the basic genetic unit of life that acts as the template for the amino acid... Read More

Unique Sequence

A genetic sequence of DNA that is unique, and therefore does not appear anywhere else in the... Read More

Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

Continued from the previous tutorial that introduces protein synthesis... mRNA and tRNA mRNA leaves the nucleus and enters... Read More

Sequence tagged sites

sequence-tagged site (Science: molecular biology) short tagged tracts of dNA sequence (200 to 500 base pairs) that is... Read More

A new wrinkle in evolution — Man-made proteins

Nature, through the trial and error of evolution, has discovered a vast diversity of life from what can only presumed to... Read More

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... Read More

Microsatellite

Definition noun, plural: microsatellites (molecular biology) A tandem repeat ranging in length from 1 to 6 base pairs,... Read More

Polypeptide

Polypeptide Definition Biology What are polypeptides? A polypeptide is defined as a polymer of amino acids joined together... Read More

Enzyme

Reviewed by: Todd Smith, PhD Definition noun plural: enzymes en·zyme, ˈɛnzaɪm (biochemistry) A... Read More

Chemical Composition of the Body

In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More

Protein Synthesis

If you have jumped straight to this page, you may wish to look at the previous tutorial about DNA, which gives background... Read More

DNA Structure & DNA Replication

Previous pages in this tutorial have described the basics of a cell, the energy required by these cells and how energy is... Read More

Signature sequence

signature sequence short oligonucleotides of unique sequence found in 16S ribosomal RNA of a particular group of... Read More

Protein Variety

The sequence of amino acids determines which type of protein it is. It is synthesized from a DNA strand, each DNA strand... Read More

Phosphorylation

Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More

Polyploidy

Reviewed by: Mary Anne Clark, Ph.D. Polyploidy Polyploidy is defined as the state of being polyploid, which... Read More

Primary structure

Definition noun (biochemistry) A structure of a biological molecule in which there is a precise sequence or order of... Read More

Isomerase

Definition noun, plural: isomerases (biochemistry) An enzyme that catalyzes the isomerization changes in a molecule, thereby... Read More

Axon hillock

Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Transferase

Definition noun, plural: transferases (biochemistry) An enzyme that catalyzes the transfer of a functional group from one... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Cladosporium species in indoor environments

Cladosporium is a fungus that mostly found in indoor and outdoor molds. It is a species that formed in simple or branching... Read More

Lyase

Definition noun, plural: lyases (biochemistry) An enzyme that catalyzes the breaking of a chemical bond through means not... Read More

Thermophile

Thermophiles Definition What are thermophiles? Let us first understand the literal meaning of the word ‘thermophile’.... Read More

Oxidoreductase

Definition noun, plural: oxidoreductase (biochemistry) An enzyme that catalyzes the transfer of electrons from an electron... Read More

Ligase

An enzyme is a catalyst or a chemical produced by cells to speed up a biochemical reaction. It is usually a protein molecule... Read More

Replication origin

Replication origin A unique dNA sequence of a replicon at which dNA replication is initiated and proceeds bidirectionally or... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Mitochondrial DNA

Mitochondrial DNA Definition noun plural: mitochondrial DNAs The genetic material in the mitochondrion that carries code... Read More