Parasitology Terminology Quiz

What is the term for a microbe that derives benefit from its host while harming it or even killing it?

What is the term for the active stage of parasites?

Which parasite lays eggs that hatch after leaving the host?

What is the non-motile, non-feeding stage of a protozoan that usually has a wall to prevent dehydration?

Which enzyme is inhibited by Allylamines in the synthesis of ergosterol?

What is the result of inhibiting the conversion of lanosterol to 4,4-dimethylcholesta-8,14,24-trienol?

What is the term for a parasite that must live on a host to survive?

Which parasite reproduction method involves a female capable of reproducing eggs without being fertilized, with the eggs containing larvae that hatch immediately?

What type of host harbors the sexual stage of parasites, where parasites complete their development?

Give an example of a paratenic host and explain its role in widening parasitic distribution.

What type of drug can contain amebiasis, but not remove it entirely?

What type of host allows the parasite to continue its life cycle and become an additional source of infection?

Microbes and Parasites

A parasite derives benefit from its host while causing harm or death, often referred to as a pathogenic parasite.
The active stage of parasites is known as the trophic stage.
Ascaris lumbricoides is an example of a parasite that lays eggs which hatch after leaving the host.

Protozoan Stages and Properties

Protozoans have a non-motile, non-feeding stage called a cyst, which typically has a protective wall to prevent dehydration.

Enzyme Inhibition in Fungal Treatment

Allylamines inhibit the enzyme squalene epoxidase, disrupting ergosterol synthesis in fungi.
Inhibiting the conversion of lanosterol to 4,4-dimethylcholesta-8,14,24-trienol results in a lack of ergosterol, compromising the fungal cell membrane integrity.

Types of Parasites and Hosts

An obligate parasite must live on a host to survive and cannot complete its life cycle without it.
Parthenogenesis is a method of reproduction where a female can produce eggs that hatch immediately without fertilization.

Host Relationships

A definitive host harbors the sexual stage of parasites, allowing them to complete their life cycle.
A paratenic host (e.g., rodents) acts as a transport medium for parasites, facilitating wider distribution in the environment without supporting further development.
Amebicides are drugs that can control amebiasis but may not eradicate the infection entirely.
An intermediate host allows the parasite to continue its life cycle and can serve as an additional source of infection for others.

Test your knowledge of parasitology terminology with this quiz. Identify terms related to different stages of parasites and infection. From eggs to larvaes, challenge yourself with these definitions.