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
Unicellular, protozoa, malaria, algae and live in water environments
include yeast and molds, multicellular except for yeast (they are unicellular and are the exception), heterotrophs (get food somewhere else) and absorb mycotoxins
multicellular and photosynthetic
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
smallest thing we will see (one-celled), helps us, keep from hurting us, and 10x more on our body than 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?