Concept explainers
Compare, Hypothesize, Invent
1. Microscopic organisms such as rotifers are not studied by microbiologists. Why is this so?
Microorganisms are defined as those organisms which could not be clearly seen by the unaided eye. They are too small in size and are generally range about 1 – 5 µm in diameter. Though size is an important characteristic of microbes, it is not sufficient to define them. The microorganisms occur in the form of both multicellular and unicellular forms. Some microbes are visible without the microscopes and are distinguished from other multicellular life forms by their lack of highly differentiated tissues.
Explanation of Solution
Rotifers are the microscopic aquatic animals that belong to the phylum Rotifera. Its size ranges from 100 μm to 30 mm. The rotifers got their name from the corona which is a rotating wheel-like structure covered with cilia. Though they are nearly microscopic in size, the rotifers are complex animals possessing multiple organ systems. They contain over 1000 cells in their body.
The microbiology studies focus only on the microscopic cellular organisms which are often unicellular or multicellular lacking the highly differentiated tissues. Thus, because of this reason, the microbiologists do not study rotifers.
Want to see more full solutions like this?
Chapter 1 Solutions
Prescott's Microbiology
- Give three impacts of Microbiology that is most relevant this time. Explain its relevance briefly.arrow_forwardDESCRIPTION Why was the - Golden Age of Microbiology - pivotal for advances in health & human well being and what role(s) did Louis Pasteur play in it?arrow_forwardMatch the following terms to the appropriate microbialgroupBacteriology (a) virusesPhycology (b) fungiMycology (c) pathogenic helminthes andprotozoaProtozoology (d) protozoaParasitology (e) algaeVirology (f) bacteriaarrow_forward
- I pis Walden Pond 5: While you were collecting your pond samples, you were troubled by the organism seen below, which was continually biting you: Domain and Kingdom? [ Choose ] can this organism act as an "arthropod vector" of microbial pathogens? [Choose] uestion 51arrow_forwardBacteria 1. Describe the three different shapes of bacteria. 2. Describe two basic methods used to classify bacteria 3. Know the structures of a bacterial cell and compare/contrast to eukaryotic 4. Describe how bacteria reproduce asexually and sexually 5. Describe bacteria and their biology that relate to ecology and pathology Protista 6. Compare and contrast prokaryotic cells and eukaryotic cells 7. Know the basic traits of the protists 8. Know the biology and characteristics of fungal-like protists 9. Know the biology and characteristics of plant-like protists 10. Know the biology and characteristics of animall-like protists (protozoa) 11. Describe the evolutionary significance of the protista Fungi 12. Know the basic traits of fungi 13. Describe the anatomy of a fungus 14. Compare and contrast autotrophic and heterotrophic in relation to fungi 15. Know the basic process of how fungi feed 16. Know the three different taxonomic groups of fungi discussed 17. Know the basic structure,…arrow_forwardCreate a dichotomous key using the genera/species: Mycale laxissima, Halichondria poa, Amphimedon spp, Axinella waltonsmithi, Spongia tubulifera.arrow_forward
- Identify whether the organism is a Micro- organism or a Macro-Organism. 1. Algae 2. Fungus 3. Helminthsarrow_forward. This flowchart helps distinguish among organisms by asking questions that have one of two possible answers. As a result, this flowchart can also be called a dichotomous key (from Greek dikho- 'in two' + temnein 'to cut'). Complete the flowchart by properly placing these genera: Bacillus, Corynebacterium, Escherichia, Mycobacterium, Neisseria, and Staphylococcus. You may need to look up additional information about these genera. Gram reaction Rod-shaped Negative Coccus-shaped Rod-shaped Positive Coccus-shaped Acid-fast Not acid-fast Spore-former No sporesarrow_forwardSummarize basic information with photos:Family name, scientific name, common name, hosts/damage, life cycle, morphological characters (Focus on similarities/differences) 1. Rhabdophaga strobiloides 2. Adelges cooleyiarrow_forward
- Suppose that one of Pasteur's swan neck flasks had broken, such that the neck came off. What would be the likely result? Maggots would have appeared on the meat The broth would have remained sterile Bacteria would not have been isolated in pure culture The animalcules would have escaped The liquid would have become contaminated You have a mixture of bacteria, archaea, fungi, protists, and algae. Which of the following would be most definitive in determining which of these cells are archaea? Size in a bright field microscope Structure in a scanning electron microscope Fluorescence in situ hybridization Super resolution microscopy Simple stainingarrow_forwardCompare and contrast the methods used by bacteria and protozoa to stay alive even when conditions within the environment are unfavorable for the growth and survival of the organism.arrow_forward1. What is spontaneous generation? 2. How did Pasteur’s experiment defeat the theory of spontaneous generation? 3. Give an example for each of the organizational levels in living things. 4. The mouse deer or pilandok has shorter fur than its counterpart deer in the Arctic region. What characteristic is exhibited in this situation? Will a mouse deer survive in cold regions? Why or why not? 5. These seeds are the start of new life, but is the seed itself alive? Use the properties of life to decide and explain.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & 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 & CompanyLaboratory 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