23. Which of the following is false concerning fungal infections? A. Different l

Question

23. Which of the following is false concerning fungal infections? A. Different locations of dermatophytic infections are designated as Tinea X (location) B. Most serious human fungal infections are acquired from other people. C. Dimorphism (yeast & mold) is observed with certain systemic fungal infections D. Trichophyton, Epidermophyton, Microsporum are dermatophytes. E. Dermatophytes cause infections of skin, nails and hair 24. Concerning helminthes, which of the following is false? A. Nematodes have a body cavity, digestive tube ending in anus, males and females. Cestodes have no body cavity, no digestive tube, and are hermaphroditic They are all chemoheterotrophs. Trematodes have no body cavity, have digestive tract ending in cecum. None of the above is false. E. 25. Which of the following is false concerning helminths? Schistoma mansoni requires both a human and a special snail host. Schistoma mansoni is the master of disguise acquiring a mask of host antigens. Ingestion of the eggs of the beef tapeworm causes cystercercosis with systemic spread of larvae. The giant round the intestine. Liver damage with Schistoma mansoni results from the host response (granulomas) around eggs recognized as foreign. A. B. C. D. worm Ascaris lumbricoides can form "worm balls" that obstruct E. nes? 26. Which of the following is false concerning Streptoccus pyoge A. Gram + B. also called the Group B strep. C. causes strep throat. if untreated could lead to rheumatic fever with heart damage. if untreated could lead to kidney problems (acute glomerulonephritis) D. E. 27. Which of the following is false concerning viruses? A DNA or RNA, but not both, single or double stranded. B. some are enveloped C. some have an (or a few) enzyme(s) D. icosahedral, filamentous, or complex in morphology E. all of the above are true of viruses. 28. Antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of A. inhibition of protein synthesis B. inhibition of molecular transport. C. decreased synthesis of plasma membrane D. osmotic lysis E cell shrinkage

Explanation / Answer

23. B

Most fungal infections are acquired from environment (air)

24. A

Nematodes do not have body cavity. They are pseudocoelomates.

25. C

Cysticercosis is caused by pork tapeworm. Beef tapeworm causes taeniasis in humans and cysticercosis in cattle.

26. B

It is group A streptococcus.

27. E

28. D : osmotic lysis

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