Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 21.7, Problem 2MQ
Summary Introduction
Activity of anaerobic microbes helps in methylation of mercury to yield methylmercury which can be further methylated to dimethylmercury. These two forms are very toxic to animals because they are potent neurotoxins and are readily absorbed by skin. Methylation process is carried out by iron-reducing bacteria and sulfate-reducing bacteria.
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8. Transcription and Translation Practice: (Video 10-1 and 10-2)
A. Below is the sense strand of a DNA gene. Using the sense strand, create the antisense
DNA strand and label the 5' and 3' ends.
B. Use the antisense strand that you create in part A as a template to create the mRNA
transcript of the gene and label the 5' and 3' ends.
C. Translate the mRNA you produced in part B into the polypeptide sequence making sure
to follow all the rules of translation.
5'-AGCATGACTAATAGTTGTTGAGCTGTC-3' (sense strand)
4
Chapter 21 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 21.1 - How is new organic matter made in nature?Ch. 21.1 - In what ways are oxygenic photosynthesis and...Ch. 21.1 - What is a methane hydrate?Ch. 21.1 - The oxygen and carbon cycles are interconnected...Ch. 21.2 - Why does Syntrophomonas need a partner organism in...Ch. 21.2 - Prob. 2MQCh. 21.2 - What is the final product of acetogenesis?Ch. 21.2 - Prob. 1CRCh. 21.3 - What is nitrogen fixation and why is it important...Ch. 21.3 - Prob. 2MQ
Ch. 21.3 - How does the compound nitrapyrin benefit both...Ch. 21.3 - The principal form of nitrogen on Earth is N2,...Ch. 21.4 - Is H2S a substrate or a product of the...Ch. 21.4 - Prob. 2MQCh. 21.4 - Prob. 3MQCh. 21.4 - Bacteria play major roles in both the oxidative...Ch. 21.5 - In what oxidation state is Fe in Fe(OH)3? In FeS?...Ch. 21.5 - Prob. 2MQCh. 21.5 - Why is excreted organic matter important to many...Ch. 21.5 - Prob. 1CRCh. 21.6 - How does the formation of CaCO3 skeletons by...Ch. 21.6 - Prob. 2MQCh. 21.6 - Prob. 1CRCh. 21.7 - What forms of mercury are most toxic to organisms?Ch. 21.7 - Prob. 2MQCh. 21.7 - Prob. 3MQCh. 21.7 - Prob. 1CRCh. 21.8 - What is the greenhouse effect and what causes it?Ch. 21.8 - What is the fate of most nitrogen used in...Ch. 21.8 - Why are the OMZs expanding and what are the likely...Ch. 21.8 - Prob. 1CRCh. 21 - Compare and contrast the carbon, sulfur, and...Ch. 21 - 14C-labeled cellulose is added to a vial...Ch. 21 - Prob. 3AQ
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