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General Parasite Terms
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30
Biology
Undergraduate 4
03/06/2012

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Term
Pellicle
Definition
Thin layer supporting the cell membrane
Term
Cortical Ectoplasm
Definition
division of cytoplasm-gel
Term
medullary endoplasm
Definition
division of cytoplasm-fluid
Term
Axoneme
Definition
inner core of cilia or eukaryotic flagella. microtubula based cytoskeleton of these organelles
Term
basal body
Definition
also known as kinetosome, serves as base for nucleation of micro-tubules in cilia/flagella
Term
pseudopodia
Definition
Amoeba method of locomotion, utilizing cellular extension through actin microfilaments.
Term
Macronuclei
Definition
Found in ciliates, polyploid and divide without mitosis
Term
micronuclei
Definition
smaller nucleus in ciliate protozoans, fission divides by mitosis,conjugation creates pairing of gamete nuclei
Term
cysts
Definition
closed sac having a distinct membrane from surrounding tissue
Term
trophozoites
Definition
A growing stage in the life cycle of some sporozoan parasites, when they are absorbing nutrients from the host
Term
alternation of generations
Definition
switching between sexual and asexual life cycle phases.
Term
Binary Fission
Definition
Method of asexual reproduction in which adult cell divides into two nearly equal pieces.
Term
multiple fission
Definition
cell division in which the nucleus first divides into several equal parts and then the cytoplasm divides into as many cells as there are nuclei
Term
schizonts
Definition
IE Plasmodium. Multinucleated life cycle of a sporozoan.
Term
Meronts
Definition
A stage in the life cycle of sporozoans in which multiple asexual fission resulting in merozoites.
Term
segmenters
Definition
similar to schizonts
Term
merozites
Definition
one of the organisms formed by multiple fission (schizogony) of a sporozoite within the body of the host.
Term
gamonts
Definition
syn. gametocyte. Cell capable of producing gametes
Term
gametogony
Definition
development of merozoites into male and female gametes in sporozoa
Term
macrogametocytes
Definition
female gametocyte that produces a macrogamete
Term
microgametocyte
Definition
male gametocyte that gives rise to a microgamete
Term
syngamy
Definition
union of two gametes to form a zygote
Term
syzygy
Definition
gamonts fuse laterally in some gregarines, not sexual
Term
sporogony
Definition
the zygote undergoes multiple divisions to form sporozoites
Term
sporozoites
Definition
motile, infective stage of certain protozoa
Term
conjugation
Definition
ciliates of the same species couple and exchange genetic material
Term
heterotrophic
Definition
referring to an organism that needs to feed off of others
Term
cytostome
Definition
permanent structure used to ingest food in ciliates
Term
cytopyge
Definition
permanent structure to get rid of undigested materials in ciliates
Term
encystation
Definition
triggered by pH, temp, lack of nutrients, osmotic pressure, waste products, crowding
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