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Intro to Micro

What are the 3 domains?

Archaea, bacteria and eukarya

What are 2 types of prokaryotic cells?

Archaea and bacteria

Describe prokaryotic cells.

No organelles, simple, single celled, no mitochondria

What are the 4 types of eukarya?

Protista, Fungi, Plants and Animals

-Cellular structure?

Unicellular, protozoa, malaria, algae and live in water environments

-Cellular structure?

include yeast and molds, multicellular except for yeast (they are unicellular and are the exception), heterotrophs (get food somewhere else) and absorb mycotoxins

-Cellular structure?

multicellular and photosynthetic

-Cellular structure?

multicellular, heterotroph (get food somewhere else) and ingest, worm (helminthes)

How long have microbes been around?

3.8 billion years old (earth is 4.5 billion years old)


study of microbes


small organism


smallest thing we will see (one-celled), helps us, keep from hurting us, and 10x more on our body than cells

acellular cells

viruses, which are still microbes, not living, and genetic or hereditary info in some viruses


heterotroph, yeast(unicellular), mold

How long microbes been around?

3.8 billion years

how long humans been looking at microbes?

about 350 years

Golden age of microbiology

germ theory, nosocomial infections/handwashing/disinfection, Koch's postulates: determining cause of disease

A microorganism has the following characteristics: eukaryotic, multicellular, has cell walls, and grows in long filaments. What is its general classification?


The microbes commonly known as ________ are single-celled eukaryotes that are generally motile.


protozoa is multicellular


Microorganisms characterized by the absence of a nucleus are called:


algae is an example of a fungus


Microbiologists study parasitic worms because

they cause diseases that are diagnosed by finding microscopic eggs in clinical specimens

How are the bacteria and the archaea different from all the other cellular microbes?

they have no nucleus

The term __________ refers to an infection acquired in a health care setting.


Which of the following is a trait shared by both archaea and protozoa?


What characteristic is shared by both molds and parasitic worms?

eukaryotes and multicellular

Viruses are unlike other infectious agents studied by microbiologists in that they are _______________.


Which of the following types of microbial cells are most similar to animal cells in terms of their structure and nutrition?


Why is Saccharomyces cerevisiae important to humans?

used in the production of alcoholic beverages and leavened bread

protozoa is a prokaryote


plasmodium is part of fungus


What is true about protozoa and light

protozoa not visible by light microscopy



Which of the following is an acellular obligatory parasite?


agar is associated with protozoa


Which area of study is concerned with the distribution and spread of disease in humans?


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