Read e-book online 11th Hour: Introduction to Molecular Biology PDF

By Deanna Raineri

ISBN-10: 0393493016

ISBN-13: 9780393493016

ISBN-10: 0632043792

ISBN-13: 9780632043798

The eleventh Hour sequence is designed for use while a textbook doesn''t make experience, whilst the direction content material is hard, or if you happen to simply need a greater grade within the direction. The authors reduce throughout the fluff, get to what you must comprehend, after which assist you realize it.

  • Clinical correlations or daily functions contain examples from the genuine global to assist scholars comprehend key recommendations extra with no trouble.
  • Dedicated website, there 24 hours an afternoon, will supply additional aid, tips, warnings of hassle spots, additional visuals and extra.
  • A speedy fee on what heritage scholars might want to follow is helping equip them to overcome a subject.
  • The most vital details is highlighted and defined, displaying the large photograph and getting rid of the guesswork.
  • After each subject and each bankruptcy, plenty of chance for drill is supplied in each structure, a number of selection, true/false, brief resolution, essay.
  • An effortless difficulty spot identifier demonstrates which components have to be strengthened and the place to discover info on them.
  • Practice midterms and finals prep them for the genuine factor.

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Extra resources for 11th Hour: Introduction to Molecular Biology

Sample text

Transcription is the process of synthesizing RNA from DNA. In eukaryotes, the RNA polymerases transcribe all of the DNA sequence between the promoter and terminator sequences. Therefore, introns are normally transcribed. However, hy the time most mRNA molecules are ready to be translated, the introns have been removed, so the introns are not translated. 6. a, b, and d. DNA replication occurs in the nucleus because this is where the genetic material is located. By the same reasoning, if DNA is used as a template for RNA synthesis, transcription must occur in the nucleus as well.

5'-TCGTCGACT-3' 9. Salllpies 1 and 3 10. Griffith initially showed that the genetic material from heat-killed virulent bacteria could be taken up by live non-virulent bacteria, making them virulent. Based on these findings, Avery, McCarty, and MacLeod tested the properties of this "transforming factor" and found it to be DNA, thereby indicating that DNA is the genetic material. Hershey and Chase provided further evidence that DNA is the genetic material rather than protein. They did this by labeling the protein coat of one batch of a bacterial phage with 35S and the DNA of another batch of the same phage with 32p, allowing the phages to infect bacterial cells, then separating the phages from the bacteria and looking to see what had happened to the radiqactive DNA and radioactive protein.

What are these two nucleotides and why? Topic Test 2: Answers 1. False. RNA polymerase synthesizes single-stranded RNA from a DNA template. 2. True. There is also a separate RNA polymerase enzyme in eukaryotes for mRNA molecules and a third enzyme for the remaining rRNA molecules. 3. False. The DNA strand that is transcribed (whether the "top" DNA strand of a double helix or the "bottom" DNA strand) can be different for different genes located on the same DNA molecule, the orientation of the consensus promoter sequences being used to point tbe RNA polymerase in the appropriate direction for each gene.

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11th Hour: Introduction to Molecular Biology by Deanna Raineri

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