Act 4 Flashcards
diverse group that shows different morphological features
microorganisms
independent cell movement from one place to another brought about by organs of locomotion, by cytoplasmic streaming or gliding
True motility
produced by the current in liquids which causes the organism to vibrate and move
brownian movement
The morphology and motility of microorganisms can be observed when they are examine under the microscope using
wet mount method and hanging drop technique
prepared by placing a drop of the fluid with the organisms on a glass slide and covering with a slip
wet mount
cover slip with the specimen is inverted over a slide with a concavity at the center
hanging drop technique
Motile or Non-motile: Escherichia coli
motile
Motile or Non-motile: Staphylococcus aureus
motile
Motile or Non-motile: Saccharomyces cerevisiae
non-motile
Motile or Non-motile: Mold
non-motile
Motile or Non-motile: protozoans
motile
Motile or Non-motile: algae
motile
Order of microorganisms per increasing size
E. coli
Staphylococcus aureus
Saccharomyces cerevisiae
Mold
Algae
Protozoans
unicellular or multicellular: Escherichia coli
unicellular
unicellular or multicellular: Staphylococcus aureus
unicellular
unicellular or multicellular: Saccharomyces cerevisiae
unicellular
unicellular or multicellular: Mold
multicellular
unicellular or multicellular: Algae
both unicellular and multicellular
unicellular or multicellular: Protozoans
unicellular
Why are flagella not visible on the motile bacteria under OIO?
Flagella are thin structures that requires staining in order to be seen.
Why are molds so widespread in nature?
The adaptation of having spores allow molds to be widespread as the spores can be disseminated through air.
How do protozoans move?
- Flagella (wave-like)
- Cilia (regular and continuous pattern)
- Pseudopodia (propel cell forward)
When is wet mount and hanging drop technique used?
Hanging drop is used for long-term observations while wet mount is for short-term observations.
