Textbook Question
Name three groups of low G + C Gram-positive bacteria.
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Ch. 11 - Characterizing and Classifying Prokaryotes
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 11, Problem 5
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ Archaea are classified into phyla based primarily on tRNA sequences.
Verified step by step guidance1
Understand the classification basis for Archaea: Archaea are a domain of single-celled microorganisms distinct from Bacteria and Eukarya.
Recall that Archaea classification is primarily based on molecular data, especially sequences of ribosomal RNA (rRNA), not tRNA.
Identify the underlined word(s) in the statement: 'tRNA sequences' are underlined and need to be evaluated for correctness.
Determine the correct term to replace 'tRNA sequences' with: The correct term is 'rRNA sequences' because ribosomal RNA sequences are widely used for phylogenetic classification.
Rewrite the statement with the correction: 'Archaea are classified into phyla based primarily on rRNA sequences.' This makes the statement true.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Archaeal Classification
Archaea are a domain of single-celled microorganisms distinct from bacteria and eukaryotes. Their classification is based on genetic and molecular characteristics rather than traditional morphology, reflecting evolutionary relationships.
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03:59
Archaeal Cell Membranes
Molecular Phylogenetics
Molecular phylogenetics uses genetic sequences, such as ribosomal RNA (rRNA), to determine evolutionary relationships among organisms. In Archaea, 16S rRNA sequences are commonly used to classify and differentiate species and phyla.
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03:20The 3 Molecular Koch's Postulates
tRNA vs. rRNA in Microbial Classification
While tRNA molecules play roles in protein synthesis, they are not typically used for phylogenetic classification. Instead, rRNA genes, especially 16S rRNA, provide conserved and variable regions ideal for studying evolutionary relationships in microbes.
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07:21Reviewing the Environmental Factors of Microbial Growth
Related Practice
Textbook Question
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ Halophiles inhabit extremely saline habitats, such as the Great Salt Lake.
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Textbook Question
Compare and contrast bacterial and archaeal cells.
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Textbook Question
Which genus is the most common anaerobic human pathogen?
a. Bacteroides
b. Spirochetes
c. Chlamydia
d. Methanopyrus
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Textbook Question
A student was memorizing the arrangements of bacteria and noticed that there are more arrangements for cocci than for bacilli. Why might this be so?
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Textbook Question
How is Halobacterium salinarum distinctive?
a. It is absolutely dependent on high salt concentrations to maintain its cell wall.
b. It is found in terrestrial volcanic habitats.
c. It photosynthesizes without chlorophyll.
d. It can survive 5 million rad of radiation.
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