Microbiology Chapter 4 – Flashcards

The woven, intertwining mass of hyphae that makes up the body of a mold is a(n) a. septum. b. rhizoid. c. spore. d. bud. e. mycelium.

Chitin is a chemical component of the cell walls of a. protozoa. b. algae. c. fungi. d. bacteria. e. All of the choices are correct

The motile, feeding stage of protozoa is called the a. trophozoite. b. cyst. c.sporozoite. d. oocyst. e. food vacuole.

Protozoan endoplasm contains a. ectoplasm. b. mitochondria. c. flagella. d. oral groves. e. None of the choices is correct.

Filamentous fungi are called a. pseudohyphae. b. septa. c. molds. d. dimorphic. e. mycelium.

Larval development of helminths occurs in which host? a. primary host b.intermediate (secondary) host c. definitive host d. transport host e. Mating takes place in all hosts

Cilia are structures for motility found primarily in: a. protozoa. b. algae. c. fungi. d. bacteria. e. All of the choices are correct.

Fungal infections are known as ________ and can be acquired from environmental or clinical sources. a. secondary infections b. vegetative infections c. mycoses d. saprobic infections e. parasitoses

When buds remain attached, they form a chain of yeast cells called a. pseudohyphae. b. septa. c. molds. d. dimorphic. e. mycelium

All of the following are found in some or all protozoa except a. motility. b. ectoplasm and endoplasm. c. heterotrophic nutrition. d. formation of a cyst stage. e. cell wall.

The group of protozoa that use pseudopodia to move are the a. sarcodina. b. ciliophora. c. mastigophora. d. apicomplexa. e. None of the choices is correct.

Which of the following does not pertain to helminths? a. in kingdom Protista b. parasitic worms c. eggs and sperm used for reproduction d. often alternate hosts in complex life cycles e. have various organ systems

All of the following are helminths except a. pinworms. b. flukes. c. trypanosomes. d. roundworms. e. tapeworms.

Larvae and eggs are developmental forms of a. protozoa. b. algae. c. helminths. d. fungi. e. None of the choices is correct.

Amoebiasis (amoebic dysentery) is most commonly contracted through the a. fecal-oral route from contaminated food or water. b. direct transmission from one host to another. c. puncture wounds. d. insect bites. e. None of the choices is correct.

During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) a. endospore. b. cyst. c. seed. d. trophozoite. e. sporozoa.

Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called a. dimorphic. b. saprobes. c. pseudohyphae. d. spores. e. parasites

Cell walls are not usually found in a. protozoa. b. algae. c. fungi. d. bacteria. e. All of the choices are correct.

Which is not a characteristic of fungi? a. have cell walls b. photosynthetic c. include single-celled and filamentous forms d. heterotrophic nutrition e. can use a wide variety of nutrients

Parasitic worms have a highly developed ______ system. a. digestive b. nervous c. respiratory d. muscular e. reproductive

Protists include a. yeasts and molds. b. algae and protozoa. c. helminths. d. All of the choices are correct. e. None of the choices is correct.

The long, threadlike branching cells of molds are called a. conidiophores. b. pseudohyphae. c. hyphae. d. septate. e. ascus.

Adulthood and mating of helminths occur in which host? a. primary host b. secondary host c. definitive host d. transport host e. Mating takes place in all hosts.

All of the following are helminths except a. tapeworms. b. flukes. c. flatworms. d. roundworms. e. All of the choices are helminths.

Which is mismatched? a. Giardia —causes intestinal distress; transmitted by feces in drinking water b. Histoplasma —fungus that causes Ohio Valley fever c. Trichomonas —sexually transmitted vaginal infection d. Plasmodium —protozoan that causes Chagas disease e. Naegieria - amoeba that causes brain infection.

Protozoan cysts a. are part of all protozoan life cycles. b. are necessary for transmission to a new host. c. are helpful in surviving unfavorable conditions. d. are the primary form of replication. e. All of the choices are correct

The group of protozoa that have gliding motility are the a. amoeba/sarcodina. b. ciliophora. c. mastigophora. d. apicomplexa/sporozoa. e. None of the choices is correct.

Most fungi obtain nutrients from dead plants and animals. These fungi are called a. saprobes. b. parasites. c. substrates. d. nonseptate. e. dimorphic.

After returning from a trip to Africa, Tom begins to feel very tired and weak. He has severe anemia. A blood smear reveals a protozoan is present in his blood. The health care provider tells Tom he has malaria. Which of the following could be the causative agent of his disease? a. HIV b. Nagieria fowleri c. Plasmodium falciparum d. Trichophyton e. Histoplasma capsulatum

The group of protozoa that have flagella are the a. sarcodina. b. ciliophora. c. mastigophora. d. apicomplexa. e. None of the choices is correct.

The group of protozoa that have flagella are the a. sarcodina. b. ciliophora. c. mastigophora. d. apicomplexa. e. None of the choices is correct.

In humans, helminths generally infect the a. digestive tract. b. urinary tract. c. nervous system. d. muscular system. e. skin.