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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Chapter 33.4, Problem 1CR
Summary Introduction
Cryptosporidium and Giardia are parasitic organisms and are commonly found in the gut region of infected people and animals. The common symptoms of both the infection includes diarrhea, abdominal cramps, lack of appetite weight loss and bloating.
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Each of the following parasite is transmitted by insect EXCEPT:
Leishmania tropica
Plasmodium vivax
Entamoeba histolytica
Rickettsia
Water-related activities
such as swimming
underwater, diving.
or other water sports
can result in water
going up the nose.
Promitosis
Amebae penetrate
the nasal mucosa
Trophozoite
Flagellated form
Amebae migrate to the brain via
the olfactory nerves causing
primary amebic meningoencephalitis
(PAM) in healthy individuals
Vector borne parasite
Facultative parasite
Obligate parasite
Ectoparasite
Trophozoites in CSF and
brain tissue
Flagellated forms
occasionally in CSF
Cyst
A=Infective Stage
Diagnostic Stage
CDC
SAFER-HEALTHIER PEOPLE"
Observe this life cycle for Naegleria fowleri, an amoebic protozoan also called "the
brain eating amoeba". N. fowleri usually completes its entire life cycle by eating
bacteria (e.g., in pond water). What is an appropriate term for its relationship with
humans?
Which of the following is NOT a true statement?
Human Schistosoma infestations are transmitted by direct person-to-person contact
without an intermediate host
If Schistosoma eggs are circulated in the blood, they can lodge in distant organs
Schistosoma adults lay their eggs into the intestine, where they are shed in feces
Granulomas form around Schistosoma eggs and can damage internal organs (liver, lungs,
etc.)
Schistosoma flukes (trematodes) inhabit the intestinal blood vessels for part of their life
cycle
Chapter 33 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 33.1 - Prob. 1MQCh. 33.1 - Prob. 2MQCh. 33.1 - Prob. 3MQCh. 33.1 - Prob. 1CRCh. 33.2 - Give an example of a superficial, a subcutaneous,...Ch. 33.2 - Prob. 2MQCh. 33.2 - Prob. 1CRCh. 33.3 - Prob. 1MQCh. 33.3 - Prob. 2MQCh. 33.3 - Prob. 1CR
Ch. 33.4 - What symptoms of giardiasis would suggest that...Ch. 33.4 - How does one contract a case of trichomoniasis? A...Ch. 33.4 - What is unusual about the oocysts of...Ch. 33.4 - Prob. 1CRCh. 33.5 - Which stages of the Plasmodium life cycle occur in...Ch. 33.5 - What are the natural reservoirs and vectors for...Ch. 33.5 - Prob. 3MQCh. 33.5 - Prob. 1CRCh. 33.6 - Prob. 1MQCh. 33.6 - Prob. 2MQCh. 33.6 - How are sleep patterns altered in cases of African...Ch. 33.6 - Prob. 1CRCh. 33.7 - How does the pathogen causing schistosomiasis...Ch. 33.7 - From what source are most cases of human...Ch. 33.7 - Prob. 1CRCh. 33 - Prob. 1AQCh. 33 - Prob. 2AQCh. 33 - Prob. 3AQCh. 33 - Prob. 4AQ
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- Label the stages of the Trypanosoma cruzi life cycle as well as the form of the parasite in each stage. Drag the appropriate labels to their respective targets..arrow_forwardwrite an article on Cryptosporidium a pathogenic eukaryote parasite. What is the natural habitat for this organism? (water, soil, humans, plants, etc.) What clinical significance does this organism have for humans? (What disease/infections does it cause in humans?) What is the mode of transmission to humans? (How do you get an infection with this organism?) What is the worldwide geographic distribution for this organism? (Where is it found, where have there been reported cases or outbreaks lately?)arrow_forwardAn individual who swam in freshwater during the summer after a time experiences intense head pain, nausea and fever. This could indicate (can be multiple) Primary Amebic Menigoencephalitis (PAM) Dinoflagellates were present a Naegleria fowleri infection a harmful algal bloom (HAB)arrow_forward
- The following describes which helminthic parasite? A tiny nematode (roundworm) that lives in the human intestine; females migrate out of the anus at night to lay eggs. Most common helminthic infestation of humans in the US; spread in institutions and families through bedclothes and fingernails. Echinococcus Enterobius Diphylobothrium Trichinella None of the other four answers fit this descriptionarrow_forwardAll of the following are protozoan diseases of the gastrointestinal tract, acquired by ingesting cysts EXCEPT: Cryptosporidiosis Amoebic dysentery Giardiasis Trichomoniasis None of the other four answers (All are protozoan Gl diseases acquired by ingesting cysts)arrow_forwardPlasmodium is the most deadly parasite globally. There are nearly 250 million new cases of malaria diagnosed each year. Discuss at least two mechanisms that this parasite uses within its host(s) to persist, manipulate, and/or propogate.arrow_forward
- Below are statements about symbiosis. Choose the correct responses. ( Only pick one answer per [ ] ) ["Commensalism", "Mutualism", "Parasitism"] is a term that describes when two organisms both benefit from a relationship. One example of this you will view is lab is ["Viruses Infecting Bacteria", "Yeast Fermenting sugar", "Bacteria such as Rhizobium living in plant structures called root nodules"] . ["Commensalism", "Mutualism", "Parasitism"] is a term that describes when one organism benefits, while the second organism is not harmed, and does not benefit. ["Commensalism", "Mutualism", "Parasitism"] is a term that describes when one organism benefits while the second organism is harmed. In lab you will explore ["Viruses Infecting Bacteria", "Yeast Fermenting sugar", "Bacteria such as Rhizobium living in plant structures called root nodules"] as an example of this relationship.arrow_forwardFor fungal organism to be considered a "true" or "primary" pathogen it would need to be able to: Be completely nontreatable with antimicrobial agents Cause illness Invade an grow in a healthy, non-compromised host Be a member of the Candida genusarrow_forwardA group of 50 people attended a cookout. Ten days later, several people develop abdominal cramps and diarrhea. An investigation of this outbreak considers a variety of causal agents, including parasites. Among the following parasites, which one is the LEAST LIKELY to have caused the outbreak? O Taenia solium O Balantidium coli O Entamoeba histolytica O Giardia lambliaarrow_forward
- Why would you be surprised to find the exact same microbial symbionts inhabiting squid and the rumen of a cow? Consider both the physical and chemical conditions of the habitat and the requirements for the symbiosis to be successful.arrow_forwardUse this information to anwer the question: Babesia microti is a red cell parasite that is endemic in the Northeastern and upper Midwestern regions of the US and responsible for the disease referred to as babesiosis. The parasite is most often transmitted by the bite of a deer tick but may also be transmitted by blood. Infection may be asymptomatic or cause non-specific symptoms: fever, fatigue, headache and muscle pain, or in some cases severe disease in those with a compromised immune system, hemoglobin-related diseases (such as sickle cell disease) or those lacking a spleen. The Red Cross began blood donation screening under an investigational protocol in June 2012 in the New England area and upper Midwest. Donors who consented for investigational screening were tested by two tests: an individual donation NAT assay (polymerase chain reaction, PCR) and an antibody assay, the latter using an automated indirect immunofluorescence assay (IFA). Reactive donations were further tested by…arrow_forwardEach of the following parasites have food and water method of transmission EXCEPT * Leishmania tropica O Entamoeba histolytica Giardia lambliaarrow_forward
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