Parasitology Quiz

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Questions and Answers

What is Parasitology?

  • The study of protein structures in parasites
  • The study of parasites and their relationship with their host (correct)
  • The study of symbiotic relationships between organisms
  • The study of the ecological impact of parasites

What is the difference between infestation and infection?

  • Infestation is invasion of the body by endoparasites, while infection is invasion of the body by ectoparasites
  • None of the above
  • Infestation and infection are the same thing
  • Infestation is invasion of the body by ectoparasites, while infection is invasion of the body by endoparasites (correct)

What is parasitism?

  • A form of symbiotic relationship where both parties benefit from each other
  • None of the above
  • A form of symbiotic relationship where one party or symbiont (i.e., parasites) benefits to the detriment of the other party (host) (correct)
  • A form of symbiotic relationship where one party benefits without harming the other

What is the difference between definitive hosts and intermediate hosts?

<p>Definitive hosts harbor the adult stage of the parasite, while intermediate hosts harbor the larval stage of the parasite (C)</p> Signup and view all the answers

What is the difference between facultative parasites and obligate parasites?

<p>Facultative parasites can live independently of the host, while obligate parasites must live inside the host (B)</p> Signup and view all the answers

What is the difference between commensalism and mutualism?

<p>Commensalism is a form of symbiotic relationship in which one species benefits from the other without harming or benefiting the other, while mutualism is a symbiotic relationship in which two organisms mutually benefit from each other (A)</p> Signup and view all the answers

What is Parasitology?

<p>The study of parasites and their relationship with their host (C)</p> Signup and view all the answers

What is the difference between infestation and infection?

<p>Infestation is invasion of the body by ectoparasites, while infection is invasion of the body by endoparasites (C)</p> Signup and view all the answers

What is the difference between permanent parasites and intermittent parasites?

<p>Permanent parasites remain in the host from early life to maturity, while intermittent parasites simply visit the host during feeding time (A)</p> Signup and view all the answers

What is the difference between definitive hosts and intermediate hosts?

<p>Definitive hosts harbor the adult stage of the parasite, while intermediate hosts harbor the larval stage of the parasite (C)</p> Signup and view all the answers

What is parasitism?

<p>A form of symbiotic relationship where one party or symbiont (i.e., parasites) benefits to the detriment of the other party (host) (D)</p> Signup and view all the answers

What is the difference between facultative parasites and obligate parasites?

<p>Facultative parasites can live independently of the host, while obligate parasites must live inside the host (D)</p> Signup and view all the answers

What is the difference between commensalism and mutualism?

<p>Commensalism is a form of symbiotic relationship in which one species benefits from the other without harming or benefiting the other, while mutualism is a symbiotic relationship in which two organisms mutually benefit from each other (C)</p> Signup and view all the answers

What is Parasitology?

<p>The study of parasites and their relationship with their host (C)</p> Signup and view all the answers

What is the difference between permanent parasites and intermittent parasites?

<p>Permanent parasites remain in the host from early life to maturity, while intermittent parasites simply visit the host during feeding time (D)</p> Signup and view all the answers

What is Parasitology?

<p>The study of parasites and their relationship with their host (A)</p> Signup and view all the answers

What is the difference between commensalism and mutualism?

<p>Commensalism benefits one species while the other is neither helped nor harmed, while mutualism benefits both species (D)</p> Signup and view all the answers

What is the difference between commensalism and mutualism?

<p>Commensalism benefits one species while the other is neither helped nor harmed, while mutualism benefits both species (D)</p> Signup and view all the answers

What is the difference between ectoparasites and endoparasites?

<p>Ectoparasites live outside the host's body, while endoparasites live inside the host's body (B)</p> Signup and view all the answers

What is the difference between ectoparasites and endoparasites?

<p>Ectoparasites live outside the host's body, while endoparasites live inside the host's body (D)</p> Signup and view all the answers

What are definitive hosts?

<p>Hosts that harbor the adult stage of the parasite or where the sexual stage of the life cycle of the parasite occurs (D)</p> Signup and view all the answers

What are definitive hosts?

<p>Hosts that harbor the adult stage of the parasite or where the sexual stage of the life cycle of the parasite occurs (D)</p> Signup and view all the answers

What are the different areas of Parasitology?

<p>Medical Parasitology, Veterinary Parasitology, Structural Parasitology, Quantitative Parasitology, and Parasite Ecology (A)</p> Signup and view all the answers

What are the different areas of Parasitology?

<p>Medical Parasitology, Veterinary Parasitology, Structural Parasitology, Quantitative Parasitology, and Parasite Ecology (B)</p> Signup and view all the answers

What is parasitism?

<p>A form of symbiosis in which one organism benefits at the expense of another organism usually of different species (A)</p> Signup and view all the answers

What is parasitism?

<p>A form of symbiosis in which one organism benefits at the expense of another organism usually of different species (B)</p> Signup and view all the answers

What are the types of hosts?

<p>Definitive Hosts, Intermediate Hosts, Reservoir Hosts, and Paratenic Hosts (B)</p> Signup and view all the answers

What are the types of hosts?

<p>Definitive Hosts, Intermediate Hosts, Reservoir Hosts, and Paratenic Hosts (D)</p> Signup and view all the answers

What is the most common source of exposure to infection or infestation?

<p>Contaminated soil or water (B)</p> Signup and view all the answers

Which of the following is an example of a parasite that can be contracted through oral-fecal route?

<p>Plasmodium spp from mosquitos (D)</p> Signup and view all the answers

What is the portal of exit for parasites that cause phlegm?

<p>Lungs (C)</p> Signup and view all the answers

What is the mode of reproduction of most parasitic protozoa?

<p>Binary fission (C)</p> Signup and view all the answers

What is the pathogenic stage in the general life cycle of parasites?

<p>The morphologic form responsible for the pathology produced leading to clinical manifestations (D)</p> Signup and view all the answers

What is the sub-kingdom classification of multicellular parasites?

<p>Metazoa (B)</p> Signup and view all the answers

What is the mode of transmission of parasites?

<p>Ingestion of contaminated food and water (B)</p> Signup and view all the answers

Which of the following is NOT a type of single-celled parasite?

<p>Trematodes (B)</p> Signup and view all the answers

What is the purpose of fecal concentration methods?

<p>To detect cysts, oocysts, and larvae of nematodes (A)</p> Signup and view all the answers

What type of stool is best for detecting trophozoites?

<p>Liquid stool (A)</p> Signup and view all the answers

What is the purpose of the cellophane/scotch tape method?

<p>To collect pinworms (B)</p> Signup and view all the answers

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Study Notes

Parasitology

  • Parasitology is the study of parasites, their hosts, and the relationship between them.

Infestation and Infection

  • Infestation: the presence of ectoparasites, such as arthropods, that live on the outside of the host's body.
  • Infection: the presence of endoparasites, such as protozoa, helminths, and fungi, that live inside the host's body.

Parasitism

  • Parasitism: a type of symbiotic relationship where one organism, the parasite, benefits, and the other, the host, is harmed.

Hosts

  • Definitive hosts: the hosts in which the parasite reaches maturity and reproduces.
  • Intermediate hosts: the hosts in which the parasite undergoes development, but does not reach maturity.
  • Types of hosts: definitive, intermediate, paratenic, and accidental hosts.

Parasite Classification

  • Obligate parasites: cannot survive without a host.
  • Facultative parasites: can survive with or without a host.
  • Permanent parasites: remain attached to the host for their entire life cycle.
  • Intermittent parasites: only attach to the host for part of their life cycle.

Symbiotic Relationships

  • Commensalism: a type of symbiotic relationship where one organism benefits, and the other is not affected.
  • Mutualism: a type of symbiotic relationship where both organisms benefit.

Ectoparasites and Endoparasites

  • Ectoparasites: parasites that live on the outside of the host's body, such as arthropods.
  • Endoparasites: parasites that live inside the host's body, such as protozoa, helminths, and fungi.

Parasitology Subfields

  • Medical parasitology: studies parasites that affect human health.
  • Veterinary parasitology: studies parasites that affect animal health.
  • Wildlife parasitology: studies parasites that affect wild animals.

Parasite Transmission and Life Cycle

  • Most common source of exposure to infection or infestation: contaminated food and water.
  • Portal of exit for parasites that cause phlegm: respiratory tract.
  • Mode of reproduction of most parasitic protozoa: binary fission.
  • Pathogenic stage in the general life cycle of parasites: trophozoite stage.
  • Sub-kingdom classification of multicellular parasites: Metazoa.
  • Mode of transmission of parasites: various, including direct contact, vectors, contaminated food and water, and vertical transmission.

Diagnostic Techniques

  • Fecal concentration methods: used to detect parasites in stool samples.
  • Cellophane/scotch tape method: used to detect parasites in stool samples, especially for detecting pinworms.

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