Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 1AC
There are many areas of disagreement about the classification of organisms. For example, there is no consensus about whether the red wolf is a distinct species or about how many kingdoms are within the domain Bacteria.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
For this assignment you will create a dichotomous key to
help you Identify Bacteria (which are a pain in the bum to
identify on the species level.) We will be focused on the
general terms of bacteria and the only Phylum that will be
addressed is the Cyanobacteria.
Use the following to create a dichotomous key to begin to
identify Bacteria:
BACTERIA
Bacillus
Coccus
Spirillium
Phylum Cyanobacteria
Gram (+) (-)
Root nodules
To Begin use the following question:
Does the organism exhibit a membrane bound
nucleus?
WHICH ORGANISM CAN MOST LIKELY BE CLASSIFIED IN THE DOMAIN BACTERIA?
Some degree of genetic exchange occurs in bacteria, which reproduce mostly asexually. What evolutionary factors should be considered in debating whether or not the biological species concept (BSC) can be applied to bacteria?
Chapter 18 Solutions
Biology: Life on Earth
Ch. 18 - The science of naming and classifying organisms is...Ch. 18 - 2. 2. A scientific name consists of a(n) _________...Ch. 18 - In Linnaean classification, the eight major...Ch. 18 - 4. Systematists determine the evolutionary...Ch. 18 - Prob. 5FTBCh. 18 - The number of named species is about __________,...Ch. 18 - What contributions did Linnaeus and Darwin make to...Ch. 18 - What features would you study to determine whether...Ch. 18 - What techniques might you use to determine whether...Ch. 18 - 4. Only a small fraction of the total number of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The universal phylogenetic tree of life shows the divergence of Bacteria, Archaea, and Eukarya. Studies of Lokiarchaeota help to elucidate these relationships, but the first universal tree of life was constructed by Carl Woese using ribosomal RNA sequences. There are advantages to using different types of nucleic acid for different types of analyses. What is a specific advantage of using small subunit ribosomal RNA (SSU rRNA) gene sequences for phylogenetic analysis compared with DNA sequences? ▸ View Available Hint(s) SSU rRNA sequences accumulate mutations more rapidly than protein-encoding DNA. SSU rRNA is frequently transferred through horizontal gene transfer, whereas DNA sequences are not. Primers are required in DNA sequence analysis, but not for SSU rRNA sequence analysis. Although PCR products can be visualized with SSU rRNA, this is not the case with other forms of nucleic acids. DNA sequences are too highly conserved to work well for sequence analysis; individual species are…arrow_forwardIn studying Lokiarchaeota, researchers identified eukaryotic signature genes and used this information to better understand the relationship between archaeans and eukaryotes. Many other types of genetic analysis can be used that focus on certain types of genes. One example of this is multilocus sequence typing (MLST), which focuses on examining genes called housekeeping genes. Microbes encode both housekeeping and pathogenic genes in their genome. Drag the examples of genes to the correct bins to indicate whether they are housekeeping genes, pathogenic genes, or eukaryotic signature genes. Place the phrase describing a gene product in the correct bin. ► View Available Hint(s) peptidoglycan synthesis genes Housekeeping genes membrane remodeling genes cytoskeletal genes membrane lipid genes Pathogenic genes endotoxin genes Reset ribosomal genes exotoxin genes Eukaryotic signature genes Helparrow_forward3) Phylogenetic tree of selected bacteria Numbers at the end of lines indicate the species represented by that endpoint 1) Gram-negative bacteria 4 8) Gram-positive bacteria 5 10 11 Ancestor of all Bacteriaarrow_forward
- What are the 4 characteristics/properties of rRNA genes which make them good molecular chronometers. Why viruses are not found in the tree of life? Why might viable cell cultures be of more use in microbial taxonomy than preserved specimens? Is it possible to provide a formal name for a microorganism that has not been cultivated in isolation? What kind of name might be used if a microorganism is well-characterized but cannot yet be cultivated in isolation?arrow_forwardWhich of the following is true regarding the diversity of life ? a) Domain Archaea does not contain any disease-causing organisms. b) Bacteria can vary greatly in size and range up to 700 µm in length Microbial Eukarya may have first arisen two billion years ago, well before fungi, plants c) animal d) All of the above are true 7:33 /arrow_forwardHow many species of Bacteria and Archaea have been named?How many likely exist?arrow_forward
- Why did Carl Woese propose the domain Archaea? The domain Bacteria already had too many organisms in its classification. The methanogens were discovered to be a complex organism, between prokaryotic bacteria and eukaryotes, thus it needed its own domain. He discovered that methanogens were too large to be classified as bacteria, but too small to be classified as Eukarya. In analyzing the rRNA of methanogens, he discovered that it was completely distinct from any other bacterial RRNA that had been studied. The DNA of methanogens was discovered to use different nucleotides than those of organisms in Eukarya or Bacteria.arrow_forwardGive explanation Which of the following statements is TRUE based on the phylogenetic tree shown? a) Bacteria and archaea are equally related to to eukarya b) Plants and ciliates are more closely related than plants and animals c) Green sulfur bacterial are more closely related to archaea than the Thermotogales d) Methanosarcina and Haloarchaea are equally related to Methanococcus e) Flavobacteria are the last common ancestor between bacteria and eukaryaarrow_forwardWhich of the following statements are TRUE about organisms in the Domain Bacteria? I. Consist of bacteria and cyanobacteria II. Some are photoautotrophs III. Genetic material is a single stranded DNA IV. Organelles are not presentarrow_forward
- Consider the fact that the use of 16S rRNA sequencing as a taxonomic and phylogenetic tool has resulted in tripling the number of bacterial phyla. Why has the advent of this genetic technique expanded the currently accepted number of microbial phyla?arrow_forwardThe GC content of Micrococcus is 66 - 75% and of Staphylococcus is 30-40 % moles, from this information would you conclude that these organisms are related? Include an explanation of why GC content is a viable method by which to identify the relatedness of organisms. – In your explanation of “why”, include information of why we are able to use genetic techniques to identify organisms or determine their relatedness, and specifically why GC content can help determine these. Keep answer between 2-3 sentencesarrow_forwardThe GC content of Micrococcus is 66 - 75% and of Staphylococcus is 30-40 % moles, from this information would you conclude that these organisms are related? Include an explanation of why GC content is a viable method by which to identify the relatedness of organisms. – In your explanation of “why”, include information of why we are able to use genetic techniques to identify organisms or determine their relatedness, and specifically why GC content can help determine these.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Bacterial Endospore Formation -Biology Pundit; Author: Biology Pundit;https://www.youtube.com/watch?v=6_sinRhE8zA;License: Standard YouTube License, CC-BY
Taxonomy of Bacteria: Identification and Classification; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8IJRzcPC9wg;License: Standard YouTube License, CC-BY