TMA2/BIO212

TMA Quiz Questions TMA: TMA2/BIO212 SCORE:  9.00 BIO212 - HELMINTHOLOGY Dr. Olaniyi Omolara (oolaniyi@noun.edu.ng ) 1 Which of the following is not true of integral membrane protein? The integral membrane protein cannot be visualised by fluorescence microscopy Integral membrane proteins interact widely with hydrocarbon chains of membrane lipids The integral membrane protein can be visualised by electron microscopy Integral proteins are the most abundant type of protein scattered in the lipid bilayer 2 A fluke was identified as the causal organism of a clinical infection in a human population, what group does such a fluke belong to? Flukic trematodes Didymozoidic trematodes Apidogastric trematodes Digenetic trematodes 3 How does Echinostoma sp. differ form of trematode differ from Fasciola hepatica ? In Fasciola hepatica oral sucker is surrounded by a prominent collar that is equipped with spines In Echinostoma sp. oral sucker is surrounded by a prominent collar that is equipped with spines Echinostoma sp. Has only one sucker, which is prominent at the posterior of the body Fasciola hepatica has only one sucker, which is prominent at the posterior of the body 4 Which of the following is not correct about Schisotomes? Schisotomes are hermaphrodites Schisotomes are digeneans Cross fertilization between different individuals is more generally the rule with Schisotomes In Schosotomes, the genital atrium opens into the uterus. 5 Which of the following options is not a possible life cycle of digeneas? Adult parasites (Asexual/Sexual reproduction) – eggs – larval parasites (Asexual reproduction)/first intermediate host – Cercaria – larval parasites metacercaria - final definitive host Adult parasites (Asexual/Sexual reproduction) – eggs – larval parasites (first intermediate host) – Cercaria – larval parasites metacercaria - larval parasites (Arrested larvae) – final definitive host Adult parasites (Asexual/Sexual reproduction) – eggs – larval parasites (Asexual reproduction)/first intermediate host – final definitive host Adult parasites (Asexual/Sexual reproduction) – eggs – larval parasites (Asexual reproduction)/first intermediate host – Cercaria – final definitive host 6 It is the most important human helminthiasis in terms of morbidity and mortality with an estimated annual incidence of infection of > 200 million cases and associated estimated annual mortality rate of about 1 million deaths. Which disease incidence does this describe? Echinostomiasis Schistosomiasis Paragonimiasis Chinese liver fluke 7 An infection was contracted by cysticercosis. What is likely to be the causative agent? Cestode Beef tapeworm Taenia solium Dracunculus semipenetrance 8 Non invasive diagnostic techniques do not exist for the diagnosis of infection, hence it is difficult to estimate the annual rates of infection of these organisms. What are they? Echinococcus sp Echinostomes Dicrocoelium sp Paragonimus sp 9 The vitelline cells of the Digenean trematode's egg produces globules of a mixture of ___ and ___ proline and phenols phenols and proteins proteins and vitelline vitelline and proline 10 It is a ciliated larva that hatched from the egg and seeks out molluscs. What is it called? Oncomiracidium Lycophore Miracidium Oncolycophore 11 ___ is a non-ciliated conical anterior papillae bearing apertures of the apical and penetration glands. Conical projection Terebratorium Sporocyst Protonephridial 12 The ___ are the second Digenean larval form to develop within the molluscan host. redia cercaria rhabdocoel pharynx 13 A major difference between sporocyst and redia is that ___ sporocyst possesses pharynx while redia does not redia possesses gut while sporocyst possesses pharynx redia possesses simple gut while sporocyst does not sporocyst has complex gut while redia does not 14 The infective form of most trematode pathogens is the ____ Progenetic stage Laval stage Trematode Cercarial stage 15 Which of the followiing is not a major group of cercariae? Monostome cercariae Distome cercariae Amphistome cercariae Cercariaea cercariae 16 The resting larval stage of trematode parasitic life cycle is the ____ metacercaria mesocercaria Furcocercous cercariae oncocercaria 17 Based based on their locations in the definitive hosts, digeneans, which of the following does not fit the classification? Intestinal flukes Eye flukes Pancreatic flukes Blood flukes 18 The schistosomes remain in ___ throughout their life span intimate copula joint united 19 Which of the following is not true about adult male schistosomes? The male is flat with the sides rolled up to form the groove Adult males measure up to 15 millimetres in length and females up to 10 mm The male possess only oral and ventral suckers The cuticle of the male is covered with minute papillae 20 Asexual multiplication of schistosomes takes place in ___ snail fish crab shrimps