RNA pot RNA pol RNA pol 27. Bacteria possess an alternative A alpha suburit that
ID: 282129 • Letter: R
Question
RNA pot RNA pol RNA pol 27. Bacteria possess an alternative A alpha suburit that transcribes specialized genes beta sigma beta is relatively a rare amino acid in a protein A Alanine B. Leucine C. Methionine Tryptophan 29. You have a 6o KDa protein to analyze what will be the approx size of the coding sequence of it in base pairs? A 1506 1638 1800 2436 In lysogenic mode, lambda repressor protein shuts down transcription of all the genes except for the A. c ?.cil 30. gene. Select the correct statement about enhancers a) b) They stimulate the binding of repressor to DNA. 31. They are proteins that promote transcription of RNA They bind protein factors and stimulate transcription. They are nonpromoter protein elements e) None of the choices is correct 32. Which of the following is not a part of the core class Il promoter? a) TATA box br Upstream element C) BRE d) DPE e) Intr 33. Which subunit of prokaryotic RNA polymerase perform the RNA synthesis? a) Sigma Beta c) Alpha d) Omega 34. Which of the following is absent in an operon? a) operator b) promoter d) e) both operator and promoter both promoter and intronExplanation / Answer
27. c) sigma. Sigma factor is responsible of transcription of specialised genes.
28. d) tryptophan. Though tryptophan and methionine both are rare in proteins, tryptophan is rarer.
29. b) 1636. There are online tools used to convert it directly.
30. b) CII. Predominance of CII switches the bacteria to lysogenic cycle.
31. a) They are proteins that promotes transcription of RNA. As the name suggestsm they enhance or promote the transcription of genes.
32. b) Upstream. Rest are parts of core class II promoter.
33. b) Beta. Beta subunit is responsible for RNA synthesis.
34. c) intron. Operon has operator and promoter sites but no intron site.
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