Parasite Biology Quiz

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  • Created by: Sofalof
  • Created on: 23-05-17 15:05
What is the equivalent of L3 larvae in non-parasitic nematodes known as?
Dauerlarvae
1 of 62
What feature of nematodes allows for instant physiological changes?
Larval moulting
2 of 62
How do amobebae move and engulf food?
Oozing cytoplasm pseudopodia
3 of 62
Which process forms sporozoites in apicomplexan lifecycles?
Sporogony
4 of 62
In apicomplexans, merozoites and schizonts are formed through which process?
Schizogony
5 of 62
How do sporozoites attach to cell membrane surfaces?
Myosin motor and actin cytoskeleton
6 of 62
What kind of association do parasites form with their hosts?
Heterogenetic
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What kind of skeleton do nematodes have?
Hydrostatic
8 of 62
What is a nematode's cuticle secreted by?
Dermis
9 of 62
How many larval stages do nematodes have?
4
10 of 62
Tapeworms are also known as...
Cestodes
11 of 62
What is the body of a tapeworm called?
Strobili
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What is the free-swimming larvae of a monogenean called?
Oncomiracidium
13 of 62
How does a monogenean attach to substrates?
Holdfast
14 of 62
What is the intermediate host of digeneans?
Snail
15 of 62
What is the feeding stage of digeneans called?
Redia
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In a negative binomial distribution...
Variance > mean
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Which parasite are developing world field workers particularly susceptible to?
GI nematodes
18 of 62
Which direct method is best used to diagnose Onchoceriasis volvulus?
Skin snip
19 of 62
What does ELISA measure?
Immunological response to parasites
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What does the WHO's DALYs measure stand for?
Disability Adjusted Life Years
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What is the WHO DALYs score for GI nematodes?
39 million years
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What percentage of worm load variation is due to genetics?
40%
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Which argument explains why parasites haven't evolved avirulence?
Group selection
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Which antibody type causes inflammation?
IgE
25 of 62
Which antibody type is dominant in circulation?
IgG
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What occurs during ADCC?
Cells that release cytotoxic molecules are attracted
27 of 62
What is the MHC genetic locus in humans?
HLA
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Which T helper cells have an anti-microparasite function?
Th1
29 of 62
In the hygiene hypothesis, which Th cell type is more prevalent, causing higher allergy rates?
Th2
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Which molecules do Tc cells recognise?
MHC class I, CD8
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How do microflilariae 'tell the time'?
Blood oxygen levels
32 of 62
Which antigen is involved in spontaneous cure?
IgE
33 of 62
What kind of conditions can nematode infections be used to treat?
Autoimmune dieseases
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What percentage of malaria cases are in tropical Africa?
90%
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How deaths are caused by malaria each year?
400,000
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What rare part of the malaria cell could be a possible drug target?
Apicoplast
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Which malarial stage can be used as a vaccine?
Sporozoites
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What is diverse in malaria merozoites which make it difficult to mount an immune response against?
MSP
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What percentage of people in tropical Africa have the sickle-cell trait?
30%
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What is the phenotypic effect of being heterozygous for alpha thalassaemia?
25% malaria protection
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How long are Wucheria males?
34cm
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What is the Wucheria global elimination programme called?
GPELF
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Which parasite has a mitosome (relic mitochondria)?
Giardia duodenalis
44 of 62
What type of cancer is linked to Trichomonas valignalis in men?
Prostate cancer
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What immune response is mounted against trypanosomes in the liver?
Phagocytosis
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What type of protein determines variant antigenic types in trypanosomes?
Variant Specific Glycoproteins (VSGs)
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Which parasite species is transmitted by sandflies?
Leishmania spp.
48 of 62
Which schistosoma species is transmitted via urine?
S. haematobium
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How many trophozoites are released from each Entamoeba histolytica cyst?
8
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Which condition do entamoebas cause?
Amoebic dysentry
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Which drugs are used to treat Eimeria?
Coccidiostats
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How are less virulent strains of parasites made for use in vaccinations?
Attenuation
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How many eggs does the human roundworm produce per day?
200,000
54 of 62
How many UK births are affected by congenital toxoplasmosis?
3/100,000
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How much blood does a human hookworm ingest per day?
50ul
56 of 62
Which season are human hookworm larvae dormant during?
Dry season
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How long is the pinworm?
10mm
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Haemonchus and Ostertagia are important parasites in which animals?
Ruminants
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What type of cell does Trichinella draw its nutrition from?
Nurse cell
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Neurocysticercosis and epilepsy can be caused if which parasite encysts in the brain?
Pork tapeworm
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Which is the longest parasitic worm, and what is its maximum length?
Broad tapeworm - 25m
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Other cards in this set

Card 2

Front

What feature of nematodes allows for instant physiological changes?

Back

Larval moulting

Card 3

Front

How do amobebae move and engulf food?

Back

Preview of the front of card 3

Card 4

Front

Which process forms sporozoites in apicomplexan lifecycles?

Back

Preview of the front of card 4

Card 5

Front

In apicomplexans, merozoites and schizonts are formed through which process?

Back

Preview of the front of card 5
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