Micro exam 5

1. Which of these subgroups form part of the supergroup Uniknota? a. Ameobozans 2. Which of these subgroups form part of the supergroup Excavata? a. Kinetoplastids b. Diplomonads c. Parabasalids 3. Match the characteristic to the representative parasitic genera (one match per characteristic) a. Giardia: Two nuclei, modified mitochondria b. Trypanosmoa, Leishmania: Kinetoplast DNA c. Trichomonas: Thousands of flagella; no mitochondria d. Paramecium: Micro and micronuclei e. Plasmodium, Toxoplasma: Apical complex, multiple hosts f. Entameoba: Pseudopodia 4. Select one of the following four diseases to correctly complete each of the statements below: a. Malaria: i. Caused by an agent that belongs to the apicomplexans ii. Caused by an organism that infects and destroys red blood cells iii. Has the mosquito as definitive host while human is intermediate host iv. Transmitted in one form by the Anapheles mosquito v. Caused by an agent that has four pairs of anterior flagella and two nuclei b. Giardiasis: i. Most commonly detected intestinal parasitic disease reported in the United States ii. Caused by an agent that displays bilateral symmetry iii. Caused by an agent that has four pairs of anterior flagella and two nuclei iv. Also referred to as sleeping sickness c. Typanosomiasis: i. In one form is transmitted by the reduviid, or “kissing bug” ii. In one form is transmitted by Tsetse fly iii. Also referred to as sleeping sickness d. Trichomoniasis i. Is among the most common parasitic disease in the United States ii. Primarily transmitted by sexual contact 5. THe Malaria life cycle. Match the description to the number shown in the figure. a. Liver cell - 1 b. Oocyst - 6 c. Gametocytes - 3 d. Definitive host - 8 e. Sporozoites - 7 f. Gametes - 4 g. Intermediate Host - 9 h. Zygote - 5

i. Merozoites - 2 6. Schistosoma mansoni life cycle. MAtch the number in the figure to the corresponding description. a. Eggs are deposited in the water - 1 b. Parasite enters bloodstream and eventually female parasite lays eggs that are eliminated by feces or urine - 4 c. Definitive host - 5 d. Miracidia penetrate the indicated host - 2 e. Cercariae penetrate the indicated host - 3 f. Intermediate host - 6 7. Select one of the following four disease to correctly complete each of the statements below. a. Tetanus: i. Produces symptoms caused by a single powerful exotoxin ii. Is transmitted by anaerobic soilborne spores iii. Immunization can be rendered by an injection of toxoid iv. Vaccine is included in the DTaP series b. Bubonic plague: i. Associated with rat infestations ii. Caused by a gram-negative rod that shows bipolar staining c. Rocky Mountain spotted fever i. Transmitted by ticks ii. Was studied by Howard Ricketts d. Anthrax i. Is caused by a gram-positive, aerobic, spore-forming rod. Although can grow in anaerobic conditions as well ii. Produces symptoms caused by a single powerful exotoxin iii. Was the disease caused by the organism Koch used to devise Koch’s postulate 8. This form of the plague is highly contagious a. Pneumonic plague 9. Ehrlichiosis and Anaplasmosis is associated with a. Infection of immune neutrophils and monocytes 10. This disease is associated with rabbits “rabbit fever” and can be transmitted with as few as 50 pathogens a. Tularemia 11. The sylvatic Plague endemic to the south western USA in prairie dogs is caused by a. Yersinia pestis 12. Select one of the following four diseases to correctly complete each of the following statements below a. Gas gangrene i. Is associated with gas production as caused by tissue fermentation ii. is caused by a pathogen that releases exotoxins and enzymes that ferment muscle carbohydrates and decompose that muscle proteins