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BIO 230 Microbiology VI
Fungi: Yeasts
37
Biology
Undergraduate 2
07/21/2009

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Term
  1. Eukaryotic cells (higher cells)
  2. Larger and more complex
  3. Undergo mitosis
  4. Have a nucleus
  5. Many chromosomes
  6. Lots of cell structures
  7. Can be unicellular or multicellular
Definition
Characteristics of Fungi
Term
mycology
Definition
study of fungi
Term
mycoses
Definition
fungal infections
Term
Molds & Yeasts
Definition
2 groups of Fungi
Term
yeasts
Definition
Are referred to (incorrectly) as "false fungi"
Term
yeasts
Definition
Most are unicellular, oval or spherical cells and reproduce asexually by budding.
Term
3-7 μm
Definition
Avg. diameter of a yeast cell
Term
Bud forms on perimeter of yeast cells and grows until it is a full size yeast cell, then detaches.
Definition
How budding works.
Term

Saccharomyces

Candida albicans

Cryptococcus neoformans

Pneumocystis carinii

Definition
4 Important yeasts
Term
Saccharomyces
Definition
Commonly known as "bakers yeast" or "brewers yeast" and is beneficial to humans (not detrimental)
Term
yeasts
Definition
most of these organisms need sugar to thrive and are facultative
Term
Candida albicans
Definition
Most common pathogenic yeast
Term
candidiosis
Definition
Infection caused by Candida albicans is called ______.
Term
Candida alibcans
Definition
Yeast that is dimorphic (2 forms)
Term
Unicellular, oval, budding yeast.
Definition
Form Candida takes at body temperature (~37C)
Term
Multicellular, with pseudohyphae and spores.
Definition
Form Candida takes at below body temperature (<35C)
Term
reproduction
Definition
Purpose of blastospores
Term
survival
Definition
purpose of chlamydospores
Term
pseudohyphae
Definition
Candida buds that elongate and chain together, branching in different directions.
Term

pseudohyphae

blastospores

chlamydospores

Definition
Three features of Candida albicans as a multicellular organism.
Term

Vaginitis

Oral Candida

Candida dermititis

Systemic infections

Definition
Four types of Candida albicans infections
Term
creamy discharge, possible bleeding, discomfort, red rash on skin
Definition
symptoms of vaginitis caused by Candida albicans
Term
Oral Candida (thrush)
Definition
infection of the mouth and throat, occurs mostly in immunosuppressed persons.
Term
babies, AIDs patients, cancer patients on chemotherapy
Definition
Three groups of people who are susceptible to thrush.
Term
Bright red rash on moist skin, flaking and peeling of skin.
Definition
Symptoms of Candida dermititis
Term

Pneumonia

Encephalitis

Meningitis

Definition
Three systemic infections caused by Candida albicans in immunosuppressed people.
Term

Nystatin

Ketoconazole (clotrimazole, lotrimin)

Definition
Two current treatments for Candida.
Term
Gentian violet (crystal violet)
Definition
Old treatment for Candida albicans
Term
Cryptococcus neoformans
Definition
Yeast found in soils with nutrients contained mostly in pigeon droppings.
Term
Cryptococcus neoformans
Definition
Yeast that contains a capsule to help prevent phagocytosis.
Term
Infected dust is inhaled causing respiratory infection, fever, chronic persistent cough, malaise.
Definition
How cryptococcocis is contracted and its symptoms.
Term
malaise
Definition
generally run-down and tired due to respiratory infection
Term
scar tissue can form in lungs leading to pneumonia and TB-like illness
Definition
secondary diseases from cryptococcocis
Term
Amphotericin B (antibiotic)
Definition
Treatment for cryptococcocis.
Term
Pneumocystis carinii (Pneumocystis jiravecii)
Definition
Yeast that causes very severe pneumonia known as PCP in immunisuppressed persons.
Term
Pneumocystis carinii pneumonia (PCP)
Definition
Leading cause of death in AIDs patients
Term
flagyl (antibiotic)
Definition
Treatment for Pneumocystis carinii
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