Ch_14.1 - Which of the following is true of RNA compared to...

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Unformatted text preview: Which of the following is true of RNA compared to DNA? a. RNA and DNA use the same bases. b. RNA has a hydroxyl group on the 2’-carbon atom of its sugar component. c. Both are primarily double stranded. d. RNA exists in one form. e. RNA is more stable than DNA. When RNA is transcribed from a gene, which strand of DNA is used? a. the template strand b. the nontemplate strand c. RNA is transcribed from either strand at random. d. RNA is transcribed from either strand in a regulated manner. The transcription unit includes three essential regions. What is the proper order of these regions? a. terminator, RNA coding sequence, promoter b. RNA coding sequence, promoter, terminator c. promoter, RNA coding sequence, terminator d. RNA coding sequence, terminator, promoter e. promoter, terminator, RNA coding sequence What would the result be if a specific sigma subunit were mutated? a. Nothing would result: sigma is not essential. b. RNA polymerase would still bind at specific sites, but elongation would fail. c. RNA polymerase would fail to initiate transcription at the promoter specific to the sigma subunit. d. The core enzyme would not be stable. The bacterial holoenzyme binds to which part of the promoter? a. –10 consensus sequence b. –35 consensus sequence c. –10 and –35 consensus sequence d. The holoenzyme does not bind to the promoter. In rho-dependent transcription termination, the rho factor binds to ___________. a. mRNA b. DNA (near the end of the transcribed region) c. RNA polymerase d. sigma subunit Which is NOT one of the DNA sequences known to regulate gene transcription? a. regulatory promoter b. core promoter c. basal transcription apparatus d. enhancer Exam Review – Be able to draw the following basic structure, do not have to draw all components of the nucleotides but do need to know if nt is single ring or double ring and how many hydrogen bonds join it to its complementary base (if DNA) 10.13 12.10, 12.13 12.21, 12.22 13.7, 13.12, 13.14 14.16 14.22 DNA RNA Replication Rolling-Circle Replication Theta Replication Linear Eukaryotic Replication Recombination Holliday Model of Recombination Double Strand Break Model of Recombination RNA Transcription RNA Transcript Rho-Independent Termination RNA Processing RNAi Translation Exam Prep ¡ Review notes ¡ Read the chapter ¡ Work through True/False and multiple choice problems on the self-assessment quizzes available on d2l ¡ Complete the assigned problems at the back of the chapters ¡ Know how to do the problems on the problem sets Chapter 14: RNA Processing Gene Organization ¡ Crick (1958) proposed that genes and proteins are colinear (i.e. there is a direct correspondence between the nucleotide sequence and amino acid sequence ¡ Exceptions ¡ eukaryotic cells contain more DNA than is required to encode proteins ¡ Many large RNA molecules observed in nucleus were absent from cytoplasm Non-colinearity ¡ DNA was mixed with RNA ¡ Heated to denature DNA strands ¡ Solution cooled allowing...
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This note was uploaded on 01/30/2010 for the course ECOL 320 taught by Professor Weinert during the Fall '07 term at Arizona.

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Ch_14.1 - Which of the following is true of RNA compared to...

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