Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 5MCQ
Summary Introduction
Introduction:
Pathogens are the parasitic microorganisms that live inside the body of a host organism and cause damage to tissues, leading to diseases and even death. Pathogens include parasitic bacteria, viruses, protozoa, and helminths. All these organisms contain virulence factors that make them pathogenic and help them in causing infections in the body of the host.
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Students have asked these similar questions
A pathogen would most accurately be described as aa. parasite.b. commensal.c. saprobe.d. symbiont.
Which statement DOES NOT describe the microbes on plants?
A. May form a biofilm on the surface.
B. Always belong to the aerobic microbe group.
C. Can be found as epiphytes or endophytes.
D. Maybe incidental, symbiotic or pathogenic.
Mycorrhizae are often found associated with the roots of vascular plants, the best description of this symbiotic relationship is
A.
mutualistic
B.
parasitic
C.
commensal
Chapter 7 Solutions
Microbiology: A Systems Approach
Ch. 7.1 - List the essential nutrients of a bacterial cell.Ch. 7.1 - Prob. 2AYPCh. 7.1 - List and define four different terms that describe...Ch. 7.1 - Define saprobe and parasite, and provide microbial...Ch. 7.1 - Prob. 5AYPCh. 7.1 - Identify the effects of isotonic, hypotonic, and...Ch. 7.1 - Name two types of passive transport and three...Ch. 7.2 - List and define five terms used to express a...Ch. 7.2 - Prob. 9AYPCh. 7.2 - Prob. 10AYP
Ch. 7.2 - Prob. 11AYPCh. 7.2 - Discuss characteristics of biofilms that...Ch. 7.3 - Summarize the steps of cell division used by most...Ch. 7.3 - Define doubling time and describe how it leads to...Ch. 7.3 - Compare and contrast the four phases of growth in...Ch. 7.3 - Prob. 16AYPCh. 7 - The source of the necessary elements of life is a....Ch. 7 - An organism that can synthesize all its required...Ch. 7 - Chemoautotrophs can survive on ______ alone. a....Ch. 7 - Prob. 4MCQCh. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - A cell exposed to a hypertonic environment will...Ch. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - In a viable plate count, each _____ represents a...Ch. 7 - Prob. 11TFCh. 7 - Prob. 12TFCh. 7 - Prob. 13TFCh. 7 - Prob. 14TFCh. 7 - A facultative anaerobe can grow with or without...Ch. 7 - Prob. 1CTQCh. 7 - Describe the process used by a saprobic microbe to...Ch. 7 - Prob. 3CTQCh. 7 - Explain what is happening to the bacterial...Ch. 7 - Prob. 5CTQCh. 7 - Prob. 1VCCh. 7 - Using the words that follow, please create a...
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- Which of the following involve symbiotic relationships? A. mycorrhizae AND ruminants B. ruminants AND myxobacteria C. myxobacteria, ruminants, AND rhizobia D. rhizobia, mycorrhizae, AND ruminantsarrow_forwardWhich of the following statements is true regarding mycorrhizal relationships? a this relationship is a type of parasitism b bacteria partner with plant roots c fungi provide energy (ATP) for their partner d all glomeromycota are mycorrhizal fungi e no statements above are truearrow_forwardA compound organism consisting of a photoautotroph and a fungus is called (a) an arbuscular endomycorrhiza (b) an ectomycorrhiza (c) a lichen (d) a pathogenic agent (e) an aflatoxinarrow_forward
- Which one(s) is/are more harmful to the host and why? A) Antifungal agents B) antiprotozoal agents C) antibiotics A and Barrow_forwardThe greatest difference in health between two groups of plantsof the same species, one group with mycorrhizae and one groupwithout mycorrhizae, would be in an environment(A) where nitrogen-fixing bacteria are abundant.(B) that has soil with poor drainage.(C) that has hot summers and cold winters.(D) in which the soil is relatively deficient in mineral nutrientsarrow_forwardBacteria perform a number of ecological roles. Which role typically involves symbiosis? A. skin commensalist B. decomposition C. chemical recycling D. Immobilizing nutrientsarrow_forward
- What is the term for the symbiotic association between fungi and cyanobacteria? a. lichen b. mycorrhizae c. epiphyte d. nitrogen-fixing nodulearrow_forwardWhy do you need to know the damages made by a particular pests?arrow_forwardA fungus used for the biocontrol of plant pathogens is (a) Trichoderma viridae (b) Mucor mucedo (c) Penicillium notatum (d) Phytophthora parasiticaarrow_forward
- Difference between epidemic pathogen and virulent pathogen in Botany? With suitable examplearrow_forwardyou have a plant that is struggling to survive. after closer examination you notice tiny red mites all over your plant. which symbiotic relationship is likely occurring between the plants and the mites? explainarrow_forwardWhich of the following is not a way in which antifungaldrugs are effective?(a) They interfere with nucleic acid synthesis.(b) They increase plasma membrane permeability causingexcessive leakiness of essential substances.(c) They can impair the mitotic spindle apparatus.(d) They can induce mycorrhizae production.(e) None of the abovearrow_forward
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