Lab Exam Of Eukaryotic Microbes Flashcards
What classification group do Protists come from?
What is their cellularity and energy and food source?
Protists are a group made up of Protozoa
They are unicellular, heterotrophs
Protists life cycle has two stages, what are they?
Trophoozoitote- vegetative
Cyst- resting stage
What is the way different protists are divided or differentiated by?
Divided based on locomotion
What are the three examples of movement given in class and give an example of an organism.
Sarcodina - Ex. Amoeba that move by pseudopod-cytoplasmic extensions
Ciliates- move by cilia
Mastigophora- move by flagella, ex Euglena
What are the 5 medically important Protozoa given in class?
Entamoeba histolytica
Balantidium coli
Paramecium
Trypanosoma
Giardia lamblia
What is an Entamoeba histolytica?
What causes this?
What are the symptoms?
It’s an amoeba
Causes amoebic dysentery
Produces a cyst that is ingested by the host either (oral-fecal contamination)
Symptoms: abdominal pain, diarrhea. Blood in feces, and vomiting
What is Balantidium coli?
What is found in its life cycle and where are they found?
Compare them to E. hisolytica based on this symptom.
B. coli - Ciliate
Has a Trophozoite and cyst in its life cycle
It causes bloody diarrhea - however less sever than E. hisolytica
What is a ciliate and not a pathogen?
Paramecium
What is a falgellate, that is a blood parasite that causes African Sleeping Sickness?
Trypanosoma
What causes abdominal pain, diarrhea, but mostly asymptomatic? How does this leave the body?
Giardia lamblia - a flagellate
Causes giardiasis
Forms cysts that are shed in the feces
Causes abdominal pain, diarrhea, however its mostly asymptomatic
What causes Malaria and what do we look for to confirm it?
Plasmodium - apicomplexa
Causes the disease Malaria
Find the Ring Stage in red blood cells
What is Algae
Photosynthetic
Unicellular
Green Algae are unicellular and in fresh water
Red algae, Brown Algae
What is Spirogyra?
Green algae that have spiral chloroplast
What is Volvox?
Colonia green algae
Has a spherical aggregation of cells
What is Diatomes?
They have a cell wall that is made of silica, which the wall is divided into two haves like a Petri dish
What is Oscillatoria?
Green algae
Fungi. What are the two common ones that are taught in this class?
What are their cellularity?
Yeast and molds are fungi
Yeasts are unicellular
Molds are multicellular
Are fungi motile or nonmotile?
What is their cell wall made of?
Fungi are nonmotile
Their cell wall is made of Chitin; not cellulose as in plants
How do they get their food?
What are two forms and what are their food source?
They have no mouth, therefore they have to absorb their food
They are Heterotrophs
Saprophyte- live on dead organic matter
Parasite- live on living organisms and cause infection
What fungi is used in bread, wine and beer making?
What is their cellularity?
How do they reproduce?
Saccharomyces cerevisiae which is a yeast
They are unicellular with no mycelium, they are 10 times larger than E. coli
They reproduce by budding
What causes Thrush in the oral cavity, and vulvovaginitis of the female genitals?
Candida albicans
What is yeast-like that is the normal Microbiota in the respiratory system and found in the female urogenital tract?
Candida albicans
What can cause disease in immunodeficient patients or those that are on an antibiotic therapy?
Candida albicans
What type of mold produces a white or grayish colony and the spores look like a salt and pepper appearance?
Where are the spores produced
Rhizopus
The spores are produced within the Sporangium
Rhizopus forms mycelium
In Rhizopus, what is formed in the sporangium?
What is R. stolonifer?
Produces Sporangiospore, which is formed in the sporangium
R. stolonifer is common black bread mold
How does Rhizopus reproduce?
Rhizopus produces sexual spores.
What is Aspergillus?
What does it produce and where is this located?
Aspergillus is a mold
Produces green to yellow to brown colonies
Produces conidiospores (chain of conidia), which means dust
The conidiospores are located at the end of conidiophore
What produces black colonies and causes disease in grapes and onions?
A. niger
What are some uses of Aspergillus in industry?
A. oryzae and A. soyae are used in production of soy sauce fermentation
Some produce citric acid
Define and describe penicillium
Penicillium is a mold
Green, powdery colony
Produces a chain of spherical conidia located at the ends of the conidiophores
Spores produce a brush-shaped conidia
Produces the antibiotic penicillin
