Micro Biology - Chapter 1 & 4 2025 practice test with correct questions and
answers
- Minute living things too small to be seen with the naked eye
- >87% beneficial
- 10% opportunists
Microbes/Microorganism
- <3% pathogenic
- <1% of ALL bacteria can be grown in the lab
- Includes bacteria/archaea, fungi, protozoa, algae, viruses
- Study of viruses
Virology
- are not alive
- Study of fungus
Mycology
- Fungi = yeast and molds
- Study of protozoa
Parasitology
- single celled parasites
- Study of algae
Phycology - algae give oxygens
- single cell
- Study of bacteria
Basteriology - Bacteria
- Archae (live in extremes and most are not disease causing)
Microbial ecology Recycling elements between soil and atmosphere
Bioremediation Living organisms and waste cleanup
- Recombinant DNA technology (insulin)
Modern Age of MicroBiology - Gene therapy (put genes in you)
- CRISPR (ability to delete or possibly replace genes)
Size - Viruses 0.01-0.3 micrometers
Size - Bacteria 1-3 micrometers
- Yeasts = 2-5 micrometers
Size - Fungi
- Mold = 2-30 micrometers
- Paramecium = 120-300 micrometers
Size - Protozoa - Euglena = 35-55 micrometers
- Amoeba = 1000 micrometers (1 mm)
- Light is reflected by the condenser so that the light waves
enter the slide at an oblique angle
Darkfield Microscopy
- Only light reflected off the specimen and into the objective lens is seen
- Like dust in sunlight
- Utilizes the light's properties in contrast to light passing
Phase Contrast Microsscopy through nothing and light passing through an object
- Live specimens can be easily observed
answers
- Minute living things too small to be seen with the naked eye
- >87% beneficial
- 10% opportunists
Microbes/Microorganism
- <3% pathogenic
- <1% of ALL bacteria can be grown in the lab
- Includes bacteria/archaea, fungi, protozoa, algae, viruses
- Study of viruses
Virology
- are not alive
- Study of fungus
Mycology
- Fungi = yeast and molds
- Study of protozoa
Parasitology
- single celled parasites
- Study of algae
Phycology - algae give oxygens
- single cell
- Study of bacteria
Basteriology - Bacteria
- Archae (live in extremes and most are not disease causing)
Microbial ecology Recycling elements between soil and atmosphere
Bioremediation Living organisms and waste cleanup
- Recombinant DNA technology (insulin)
Modern Age of MicroBiology - Gene therapy (put genes in you)
- CRISPR (ability to delete or possibly replace genes)
Size - Viruses 0.01-0.3 micrometers
Size - Bacteria 1-3 micrometers
- Yeasts = 2-5 micrometers
Size - Fungi
- Mold = 2-30 micrometers
- Paramecium = 120-300 micrometers
Size - Protozoa - Euglena = 35-55 micrometers
- Amoeba = 1000 micrometers (1 mm)
- Light is reflected by the condenser so that the light waves
enter the slide at an oblique angle
Darkfield Microscopy
- Only light reflected off the specimen and into the objective lens is seen
- Like dust in sunlight
- Utilizes the light's properties in contrast to light passing
Phase Contrast Microsscopy through nothing and light passing through an object
- Live specimens can be easily observed
