Exam 12: The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

The life cycle of the fish tapeworm is similar to that of the beef tapeworm. Which of the following is the most effective preventive measure?

Plasmogamy, karyogamy, and meiosis are stages of the fungal sexual life cycle.

Which of the following arthropods does NOT transmit diseases by sucking blood from a human host?

Which of the following is the most effective control for malaria?

What do tapeworms eat?

Cercariae, metacercaria, redia, and sporocysts are all life cycle stages of trematodes.

Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all seventeen patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertion sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages because they

In the malaria parasite life cycle, humans are the host, while mosquitoes are the host as well as the vector.

In helminth life cycles, the organism that harbors the adult sexually reproductive phase of the parasite is called the intermediate host.

Three weeks after a river rafting trip, three family members experienced symptoms of coughing, fever, and chest pain. During the rafting trip, the family had consumed crayfish that they caught along the river banks. An examination of the patientsʹ sputum revealed helminth eggs, and serum samples were positive for antibodies to Paragonimus. All of the family members recovered following treatment with praziquantel. In the Paragonimus life cycle,

In mid-December, a woman with insulin-dependent diabetes who had been on prednisone fell and received an abrasion on the dorsal side of her right hand. She was placed on penicillin. By the end of January, the ulcer had not healed, and she was referred to a plastic surgeon. On January 30, a swab of the wound was cultured at 35°C on blood agar. On the same day, a smear was made for Gram staining. The Gram stain showed large (10 μm) cells. Brownish, waxy colonies grew on the blood agar. Slide cultures set up on February 1 and incubated at 25°C showed septate hyphae and single conidia. The most likely cause of the infection is a

Which of the following tends to be more complex in a parasitic helminth than in free -living helminths?

Which of the following pairs is mismatched?

Which of the following statements about the oomycote algae is FALSE?

Below are paired items referring to the heartworm Dirofilaria immitis. Which of the pairs is mismatched?

Yeast infections are caused by

Giardia and Trichomonas are unusual eukaryotes because they

All of the following are characteristic of the Platyhelminthes EXCEPT that they

Which of the following statements regarding lichens is FALSE?

The sporozoite, merozoite, gametocyte, and ring stages are all part of the Plasmodium life cycle.