Textbook Question
This bacteriophage DNA molecule has been warmed. Label the portions that likely have a higher ratio of GC base pairs and the portions that have a higher ratio of AT base pairs.
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Ch. 7 - Microbial Genetics
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 7, Problem 1
The three steps in RNA transcription are __________ , ___________ , and __________ .
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Identify the three main stages of RNA transcription, which describe the process by which RNA is synthesized from a DNA template.
The first step is called \(\textbf{initiation}\), where RNA polymerase binds to the promoter region of the DNA and begins to unwind the DNA strands.
The second step is \(\textbf{elongation}\), during which RNA polymerase moves along the DNA template strand, adding complementary RNA nucleotides to the growing RNA chain.
The third and final step is \(\textbf{termination}\), where RNA polymerase reaches a terminator sequence on the DNA, causing the RNA transcript to be released and the enzyme to detach from the DNA.
Summarize the three steps as: initiation, elongation, and termination.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Initiation
Initiation is the first step of RNA transcription where RNA polymerase binds to the promoter region of the DNA, unwinding the double helix to begin RNA synthesis. This step determines the start site for transcription.
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04:16
Initiation of Transcription
Elongation
During elongation, RNA polymerase moves along the DNA template strand, adding complementary RNA nucleotides to the growing RNA chain in a 5' to 3' direction, synthesizing the RNA transcript.
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04:01Elongation of Transcription
Termination
Termination is the final step where RNA polymerase reaches a specific sequence signaling the end of transcription, causing the RNA transcript to be released and the enzyme to detach from the DNA.
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04:17Transcription Termination in Prokaryotes
Related Practice
Textbook Question
On the accompanying figure, label:
DNA polymerase I, DNA polymerase III, helicase, lagging strand, leading strand, ligase, nucleotide (triphosphate), Okazaki fragment, primase, replication fork, RNA primer, and stabilizing proteins.
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Textbook Question
A triplet of mRNA nucleotides that specifies a particular amino acid is called a ____________ .
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Textbook Question
Which of the following is most likely the number of base pairs in a bacterial chromosome?
a. 4,000,000
b. 4000
c. 400
d. 40
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Textbook Question
How does the genotype of a bacterium determine its phenotype? Use the terms gene, mRNA, ribosome, and polypeptide in your answer.