1. Introduction to Microbiology

In what group of protozoans would you place the following organism? <IMAGE>

A phycologist studies which of the following?

a. Classification of eukaryotes

b. Alternation of generations in algae

c. Rusts, smuts, and yeasts

d. Parasitic worms

Most fungi grow as a collection of tubular structures called ___________________.

Tubular filaments with cross walls found in large fungi are ___________.

a. Septate hyphae

b. Aseptate hyphae

c. Aseptate haustoria

d. Dimorphic mycelia

The protists Trypanosoma brucei, Naegleria fowleri, and Toxoplasma gondii

a. invade host cells to cause cellular damage.

b. are only infective in the flagellated form.

c. have a nucleus and are eukaryotic.

d. have all of the above characteristics.

Use the following choices to answer the following question:

1. Metacercaria

2. Redia

3. Adult

4. Miracidium

5. Cercaria

Put the preceding stages in order of development, beginning with the egg.

a. 5, 4, 1, 2, 3

b. 4, 2, 5, 1, 3

c. 2, 5, 4, 3, 1

d. 3, 4, 5, 1, 2

e. 2, 4, 5, 1, 3

Use the following choices to answer the question given below:

a. Cryptococcus

b. Haemophilus

c. Listeria

d. Naegleria

e. Neisseria

Microscopic examination of cerebrospinal fluid from a person who washes windows on a building in a large city reveals ovoid cells.

Which of the following statements are true regarding protozoans? Select all that apply.

a. They are unicellular.

b. They have cell walls.

c. They are usually nonphotosynthetic.

d. They are animal-like protists.

e. Some are pathogens.

f. They usually have simple life cycles.

g. They often use sexual and asexual reproduction.

h. They usually lack nuclei.

i. They all have mitochondria.

Which of the following events follows cell fusion in an ascomycete?

a. Conidiophore formation

b. Conidiospore germination

c. Ascus opening

d. Ascospore formation

e. Conidiospore release

Which taxon is characterized by “hairy” flagella?

a. Apicomplexa

b. Euglenozoa

c. Alveolata

d. Stramenopila

Identify the site colonized by the following organisms: E. granulosus, E. vermicularis, Giardia, H. pylori, hepatitis B virus, mumps virus, Rotavirus, Salmonella, Shigella, Streptococcus mutans, Trichinella spiralis, Trichuris.

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Complete the following table:

How are lichens useful in environmental protection studies?

The motile feeding stage of a protozoan is called a(n)__________.

a. Apicomplexan

b. Gametocyte

c. Cyst

d. Trophozoite

The type of asexual fungal spore that forms within hyphae is called a __________.

a. Sporangiospore

b. Conidiospore

c. Blastospore

d. Chlamydospore