Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4, Problem 19Q
Which of the following is not useful to determine whether a clinical isolate is a bacterium,
- a. its size under a light microscope
- b. whether it has a cell wall
- c. whether it can form protective structures under stress
- d. all of the above are reliable
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The use of the Gram stain in microbiology is important because it differentiates
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If you visit a lake in the middle of the Amazon and take water samples to analyze under a microscope from a nearby university that has good instrumentation and there you detect microorganisms that are not visible to the naked eye. What studies would you do to determine if they are bacteria, archaea, fungi or protozoa? Explain each type of analysis and how would you rule out members of each group?
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Chapter 4 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 4.1 - Relate bacterial, archaeal, and eukaryotic cells...Ch. 4.1 - List the types of eukaryotic microorganisms, and...Ch. 4.2 - Differentiate among the flagellar structures of...Ch. 4.2 - List similarities and differences between...Ch. 4.2 - Describe the main structural components of a...Ch. 4.2 - Diagram how the nucleus, endoplasmic reticulum,...Ch. 4.2 - Prob. 7AYPCh. 4.2 - Explain the importance of ribosomes, and...Ch. 4.2 - List and describe the three main fibers of the...Ch. 4.2 - Prob. 10AYP
Ch. 4.2 - Prob. 1NPCh. 4.3 - Prob. 11AYPCh. 4.3 - Prob. 12AYPCh. 4.3 - Differentiate among the terms heterotroph,...Ch. 4.3 - Prob. 14AYPCh. 4.3 - Prob. 15AYPCh. 4.3 - Q. Yeast infection is one common side effect of...Ch. 4.3 - Prob. 2MMCh. 4.4 - Prob. 16AYPCh. 4.4 - Prob. 17AYPCh. 4.4 - Explain why a cyst stage may be useful to a...Ch. 4.4 - Prob. 19AYPCh. 4.4 - Prob. 2NPCh. 4.5 - Prob. 20AYPCh. 4.5 - Summarize the stages of a typical helminth life...Ch. 4.5 - Prob. 3NPCh. 4.5 - Prob. 3MMCh. 4 - Mitochondria likely originated from a. archaea. b....Ch. 4 - Summarize the endosymbiotic theory and explain how...Ch. 4 - Prob. 3QCh. 4 - Prob. 4QCh. 4 - Compare and contrast the structure and function of...Ch. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Considering the role of fungi in nature, speculate...Ch. 4 - Prob. 9QCh. 4 - Prob. 10QCh. 4 - Prob. 11QCh. 4 - Prob. 12QCh. 4 - Prob. 13QCh. 4 - Prob. 14QCh. 4 - Do you suppose any of these eukaryotic microbes...Ch. 4 - Which of these groups causes the most casualties...Ch. 4 - Prob. 17QCh. 4 - Do you suspect that the fact that humans use...Ch. 4 - Which of the following is not useful to determine...Ch. 4 - Why were protozoa originally considered a single...Ch. 4 - Write a paragraph that would explain the...Ch. 4 - From chapter 2, figure 2.1. Discuss how the...
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- Both archaea and eukaryotes have______ . a. peptidoglycan c. a nucleus b. histone proteins d. a capsidarrow_forwardWhen utilizing the microscope to identify the cells in an unknown sample, you notice that the cells all contain a nucleus. Based on this info you eliminate the following from your list of potential organisms: A. Bacterium B. Archaea C. Eukaryote D. A and B E. None of the abovearrow_forwardWhich of the following is not part of Koch’s Postulates? a. A specific microorganism must be present in a disease b. The organism must be isolated into pure culture c. Living organisms spring forth from non-living materials d. All of the choices are part of Koch’s Postulatesarrow_forward
- If you do not have a microscope or even a hand lens, how will you know that microorganisms exist in your environment? Cite as many proofs of its existence as you can think of.arrow_forwardWhich of the following can be used to grow and study viruses? A. embryonated eggs B. living animals. C. cell cultures D. continuous cell lines such as HeLa cells.arrow_forwardThe surface-to-volume ratio _______. a. does not apply to prokaryotic cells. b. constrains cell size. c. is part of the cell bodyarrow_forward
- Which statement best describes why antifungal treatments may have side effects to our own cells? A. Fungal cells and human cells both have cells walls made of cellulose B. Fungal cells and human cells both reproduce by budding C. Fungal cells and human cells both have flagella for movement D. Fungal cells and human cells both have a nucleus, 80s ribosome, and multiple shared organellesarrow_forwardComparing the different methods for counting bacterial cells, which of the following is FALSE? A. The serial dilution methods counts only viable cells. B. The turbidity method indirectly measures the number of cells observing how much light goes through a broth sample C. The turbidity method uses a spectrophotometer D. The direct microscopic method counts only viable cells E. The direct microscopic method counts both viable and non-viable cellsarrow_forwardList the fields of microbiology that deal with the following and explain each why these are part of fields of microbiology: a. Metabolism b. Enzymologyc. Nucleic Acid and Protein Synthesis d. Microorganisms in the Natural Environment e. Nucrobial Classification f. Microbial Cell Structurearrow_forward
- You have discovered a new coccoid-shaped microorganism with no nucleus, a rigid cell wall, and a diameter of 2 μm. Chemical tests reveal that its cell wall does NOT contain peptidoglycan. The new microorganism is A) most likely a bacterium. B) most likely a eukaryote. C) most likely an archaeon. D) either a bacterium or an archaeon.arrow_forwardIn microbiology, biochemical tests are conducted to determine............. and .............. characteristics of bacteria. A. Morphology and behavior B. Metabolic and nutrition C. Metabolic and morphology D. Arrangement and nutrition E. None of the abovearrow_forwardHow do Gram-negative bacteria differ from Gram-positivebacteria?a. They are not pathogenic.b. Their peptidoglycan cell wall is thinner.c. Gram-negative bacteria cannot be Gram stained.d. They possess a single plasma membrane.e. Gram-negative bacteria do not photosynthesize.arrow_forward
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