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The DNA replication fork. RNA primer labeled at top. A primer is a short, single-stranded nucleic acid used by all living organisms in the initiation of DNA synthesis.A synthetic primer may also be referred to as an oligo, short for oligonucleotide.
The Dick and Jane primers introduced new readers to one new word on each page and only five new words in each individual story. [2] [3] Gray and Sharp also wanted children who read the books to be able to readily identify with the characters. Sharp chose stories where the characters participated in typical children's activities. [7] [8]
A water-based primer, used primarily on wood. A primer (/ ˈ p r aɪ m ər /) or undercoat is a preparatory coating put on materials before painting.Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.
There are two main types of primase: DnaG found in most bacteria, and the AEP (Archaeo-Eukaryote Primase) superfamily found in archaean and eukaryotic primases. While bacterial primases (DnaG-type) are composed of a single protein unit (a monomer) and synthesize RNA primers, AEP primases are usually composed of two different primase units (a heterodimer) and synthesize two-part primers with ...
First-order logic uses quantified variables over non-logical objects, and allows the use of sentences that contain variables. Rather than propositions such as "all men are mortal", in first-order logic one can have expressions in the form "for all x , if x is a man, then x is mortal"; where "for all x" is a quantifier, x is a variable, and "...
Primer (gasoline engine), a device on some petrol engines used to prime the engine with gasoline before starting it; Primer (molecular biology), a nucleic acid strand (or related molecule) that serves as a starting point for replication; Money-creation primer; Trap primer, a plumbing device or valve that adds water to traps
Primer-actuated cartridges/piston primer cartridges use a primer in the form of a blank to contain the propellant within the cartridge, or as a piston to unlock the bolt and cycle the weapon's operation. Examples are the 9×51mm SMAW, MBA Javette and the M48A2.
Prima facie (/ ˌ p r aɪ m ə ˈ f eɪ ʃ i,-ʃ ə,-ʃ i iː /; from Latin prīmā faciē) is a Latin expression meaning "at first sight", [1] or "based on first impression". [2] The literal translation would be "at first face" or "at first appearance", from the feminine forms of primus ("first") and facies ("face"), both in the ablative case.