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Transcription continues until a termination series is reached. The most common termination signal is a GC-rich region which is a palindrome, followed by an AT-rich sequence. The RNA made from the DNA palindrome is self- complementary and so base pairs internally to form a hairpin structure rich in GC base pairs followed by four or more U residues shown in the figure. Though, not all termination sites have this hairpin structure. Those which lack such a structure require an additional protein, called rho (p), to help identify the termination site and stop transcription.
Explain Precautions for Gram Staining of Bacterial Cultures? 1. The dilutions should be chosen on the basis of expected counts in the food sample. 2. Food should be kept in
In the eukaryotes, eukaryotic release factor eRF-1 recognizes all three termination codons that are UGA UAA, and UAG and, with the help of protein eRF-3, terminates translation.
MUTATION THEORY (Hugo de Vries 1901) - New species are not formed by continuous variations but sudden appearance of variations i.e., mutation. Mutation are heritable and per
Phosphodiesterase Inhibitors and Other Agents Amrinone and Milrinone are prototypes of type III PDE inhibitors. They decrease the breakdown of cyclic AMP in the myocardium and i
Define Criteria for Assessment of Vitamin K Status? The parameters of blood clotting time and prothrombin time are used as criteria to assess vitamin K status as this vitamin
If carbon 1 is the carbonyl group of a 6-carbon aldose (aldohexose), which carbon determines if the sugar is a D- or L- stereoisomer? Select one: a. 1 b. 2 c. 3 d. 4
Explain about the Holmgren's Wools This is a matching test of coloured pieces of wool. While this is not a highly favored method of testing it does show serious d
Sterile Technique Every effort should be made to conduct implant surgery under sterile operating conditions. Chlorhexidine 0.2% is used as a pre-operative mouthwash and skin pr
Explain the Cardiovascular Effects? You must have heard of the 'French Paradox'. The lower incidence of heart attacks in certain areas of France despite higher prevalence of fa
how can i calculate the energy released from burnt peanut
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