Replace your flint on a butane lighter. The flint is the piece of equipment that creates the spark. It's tiny black cylinder about a quarter inch long. To replace the flint, remove the metal surrounding the flame and the spark wheel. You'll have to twist it out of position.
Intrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach.It is necessary for the absorption of vitamin B12 (cobalamin) later on in the small intestine. In humans, the gastric intrinsic factor protein is encoded by the GIF gene.t is necessary for the absorption of vitamin B12 (cobalamin) later on in the small intestine. In humans, the gastric intrinsic factor protein is encoded by the GIF gene.
Each RNA Pol is responsible for a different class of transcription : PolI transcribes rRNA (ribosomal RNA), PolII mRNA (messenger RNA), and PolII tRNA (transfer RNA) and other small RNAs. Any protein that is needed for the initiation of transcription is defined as a transcription factor. Many transciption factors act by recognizing cis-acting sites that are parts of promoters or enhancers. However, binding to DNA is not the only means of action for a transcription factor. A factor may recognize another factor, or may recognize RNA Polymerases. In Eukaryotes, transcription factors, rather than the enzymes themselves, are principally responsible for recognizing the promoter.