Microbiology Questions MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.1) African sleeping sickness (African Trypanosomiasis) is fatal if not treated because the parasiteA) reproduces so fast there is no time for an immune response to develop.B) produces a toxin which binds irreversibly to neurons.C) produces a non-immunogenic toxin the immune system cannot neutralize.D) evades destruction by the immune system by changing surface antigens.E) is an intracellular parasite in RBC's, where they are not detected by the immune system.2) Which of the following pairs is MISMATCHED?A) Parabasala; mitochondriaB) Apiqomplexans; intracellular organelles for penetrationC) Dipfomonadida; two nucleiD) Kinetoplastids; flagellumE) Ameobozoa; pseudopodia3) The Apicomplexa are named for their apical complexes which allow them toA) be motile by means of multiple flagella.B) attach to surfaces.C) penetrate the cytoplasmic membranes of host cells.D) undergo schizogony.E) carry out photosynthesis.4) Which of the following is a characteristic of sporangiospore formation?A) spores form on the underside of basidiaC) spores form within the middle of hyphaeB) spores develop inside a sac-like structureD) spores form at the tips and sides of hyphae5) Which of the following divisions of fungi utilize the conidiospore method of asexual spore formation?A) DeuteromycotaB) AscomycotaC) ZygomycotaD) Basidiomycota6) The genome of Influenza virus isA) a single circular SSRNA.B) a single circular SSDNA.C) multiple pieces of linear dsDNA.D) multiple pieces of linear ssRNA.

African “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa.1d. Evades destruction by the immune system by changing the surface antigens. Trypanosomes avoid detection by host antibodies i.e by the immune system by recurrently switching to new VSG ( variant surface glycoprotein ) coats at the cell surface.