microbiology lab 7

How do pseudohyphae in yeasts differ from vegetative hyphae in filamentous fungi?

Yeasts use pseudohyphae to invade host tissue, whereas filamentous fungi use their vegetative hyphae for obtaining nutrients.

Which of the following could Tori's physician choose as a treatment for her yeast infection?

-a topical over-the-counter ointment, such as clotrimazole or miconazole -a single oral dose of fluconazole

The Platyhelminthes group includes roundworms, tapeworms, and flukes.

false

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

true

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

true

Which of the following infections are also caused by C. albicans?

-fulminating disease -oral thrush

How do blastoconidia and chlamydoconidia produced by yeast differ from bacterial endospores?

Blastoconidia and chlamydoconidia are spore structures produced by budding in yeasts, whereas bacterial endospores are produced by bacteria under extreme conditions.

Based on the lab results, which organism is most likely causing Tori's new symptoms?

Candida albicans

Which of the following statements best describes why the treatment for Tori's fungal infection may result in side effects to her own cells?

Fungal cells and human cells have a nucleus, multiple organelles, and 80S ribosomes for protein synthesis.

You are given an unknown, pure sample of a eukaryotic organism. Which of the following tests would allow you to determine if the sample contains algae?

Place the sample in a clear container filled with media containing no sugars, and leave it in a sunny window. After a few weeks, look for growth of the organism.

Which of the following best explains why Tori developed a new series of symptoms?

The antibiotics that treated Tori's primary respiratory infection also removed some of her normal bacterial flora, resulting in an overgrowth of other organisms.

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

false

What is the key difference between yeast and mold?

Yeast is unicellular, while mold is multicellular.

Which of the following new chemicals would NOT be effective against Giardia?

a chemical that inhibits the formation of cell walls

Most cases of hookworm infection are acquired by ingestion of adult forms in contaminated food or water

false