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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Question
Chapter 16.9, Problem 1MQ
Summary Introduction
Mycoplasma are bacteria belongs to the genus: Mollicute. It lacks a cell wall and possesses only the cell membrane. This unique characteristic makes them naturally resilient to various antibiotics like penicillin or beta-lactam antibiotics, which affects the bacterial cell wall production. The common Mycoplasma infections include walking pneumonia and middle ear infection.
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In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions:
a) Outer cellular covering which includes:
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Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan
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b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm.
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Chapter 16 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 16.1 - What are some ways in which Wolbachia species can...Ch. 16.1 - Prob. 2MQCh. 16.1 - Which genera of Alphaproteobacteria are known to...Ch. 16.2 - Prob. 1MQCh. 16.2 - Prob. 2MQCh. 16.2 - Prob. 1CRCh. 16.3 - Prob. 1MQCh. 16.3 - Prob. 2MQCh. 16.3 - What is the catalase test? What catalase reaction...Ch. 16.4 - What species of Pseudomonas is a common cause of...
Ch. 16.4 - What major characteristic could be used to...Ch. 16.4 - Prob. 1CRCh. 16.5 - What four metabolic traits are most common in...Ch. 16.5 - Why is Wolinella physiologically unusual among the...Ch. 16.5 - Prob. 1CRCh. 16.6 - Prob. 1MQCh. 16.6 - How can Streptococcus pyogenes be distinguished...Ch. 16.6 - What is the difference between homofermentative...Ch. 16.7 - Prob. 1MQCh. 16.7 - What characteristics differentiate Sarcina from...Ch. 16.7 - What characteristics of Listeria make it a...Ch. 16.8 - What is the major physiological distinction...Ch. 16.8 - What is the crystalline protein made by Bacillus...Ch. 16.8 - What is a good strategy for isolating...Ch. 16.9 - Prob. 1MQCh. 16.9 - Prob. 2MQCh. 16.9 - Prob. 1CRCh. 16.10 - What is snapping division and what organism...Ch. 16.10 - What organism is involved in the production of...Ch. 16.10 - Prob. 1CRCh. 16.11 - What is mycolic acid, and what properties does...Ch. 16.11 - Prob. 1CRCh. 16.12 - Prob. 1MQCh. 16.12 - Prob. 2MQCh. 16.12 - How are the spares of streptomycetes different...Ch. 16.13 - Prob. 1MQCh. 16.13 - What species of Bacteroidetes is most abundant in...Ch. 16.14 - Describe a method for isolating Cytophaga species...Ch. 16.14 - Prob. 2MQCh. 16.14 - Prob. 1CRCh. 16.15 - How are Chlamydia and Mycoplasma (Section 16.9)...Ch. 16.15 - Prob. 2MQCh. 16.15 - Prob. 1CRCh. 16.16 - Prob. 1MQCh. 16.16 - Prob. 2MQCh. 16.16 - What are two types of intracellular compartments...Ch. 16.17 - Prob. 1MQCh. 16.17 - Prob. 1CRCh. 16.18 - What is unique about the genome of Thermotoga and...Ch. 16.18 - Prob. 1CRCh. 16.19 - Prob. 1MQCh. 16.19 - Prob. 1CRCh. 16.20 - Describe a commercial application of Thermus...Ch. 16.20 - Describe an unusual biological feature of...Ch. 16.20 - What are some of the remarkable properties that...Ch. 16.21 - Prob. 1MQCh. 16.21 - Prob. 2MQCh. 16.21 - Prob. 3MQCh. 16.21 - Prob. 1CRCh. 16 - Enteric bacteria, lactic acid bacteria, and...Ch. 16 - Microorganisms can have a variety of different...
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- What is the economic importance of mycoplasma?arrow_forwardWhat do you mean by mycoplasma?arrow_forwardBacteria of the genus Mycoplasma are distinguished from other bacterial cells by 1) cell walls composed solely of amino acids. O 2) the absence of a cytoplasmic membrane. O 3) the absence of a cell wall. O 4) Have large capsules. 5) the presence of mycolic acid in their cell walls.arrow_forward
- Explain the relationship between genome size and growth requirements of mycoplasmas. Why is genome reduction common in intracellular microbes?arrow_forwardWhy do pediatricians refrain from using tetracycline (antibiotic) to treat mycoplasmal infections in children?arrow_forwardDescribe the life cycle of Toxoplasma gondii, where does Toxoplasma "want" to be? How does toxo gets into rats and deal with the problems of being stuck in the wrong host animal?arrow_forward
- A 9 year old boy with cystic fibrosis – a genetic disease that causes a number of problems, including the build-up of thick sticky mucus in the lungs- complained of increasing fatigue, shortness of breath and worsening cough. When his mother took him to the doctor, she mentioned that his cough was a blue green color. His doctor immediately suspected a lung infection by Pseudomonas aeruginosa a common complication of cystic fibrosis. A sputum was collected and sent to the clinical laboratory. In the Clinical laboratory, the sample was plated onto Mac Conkey agar and blood gar and incubated. Mucoid colonies surrounded by bluish green color grew on both types of agar media. The colonies on Mac Conkey had no pink coloration, so the medical technologist concluded that the cells did not ferment lactose. She noted that the blue green color on the agar plates and in the sputum, knowing that P.aeruginosa makes several pigmented compounds that give rise to colors ranging from yellow to blue. One…arrow_forwardWhy is the fact that Pseudomonas species can grow in nutrient-poorenvironments medically important?arrow_forwardMycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which statement concerning mycoplasmas should be true? They are gram-negative. They are subject to lysis in hypotonic conditions. They lack a cell membrane as well. They should contain less cellulose than do bacteria that possess cell walls. They possess typical prokaryotic flagella.arrow_forward
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