BIO 302 - LECTURE 1 - INTRO TO MICROBIOLOGY
A measure of length, the thousandth part of one millimeter, the millionth part of a meter
(1 microm = 1 x 10^-6 m) - Answers- Micron
A small organism, typically less than 100 microns long, cannot be seen with the naked
eye - Answers- Microbe
What is LUCA? - Answers- Last Universal Common Ancestor:
- had DNA as genetic material
- proteins and RNA to catalyze reactions
- a lipid cell membrane
using microbes to help clean polluted environments - Answers- Bioremediation
the collection of microbes that live in and on a human - Answers- Human microbiome
A system of multiple organisms that may be considered a single organism - Answers-
Supraorganism
DNA sequencing to identify which microbes are present in the environmental sample -
Answers- Metagenomics
What four properties are true of ALL microbial organisms? - Answers- ALL microbial
organisms are small, have cells, have a genome, and have ribosomes (to make
proteins).
Essentially, the defining feature of a microbe is __________. - Answers- Essentially, the
defining feature of a microbe is their size, they are small.
What is one key benefit of being small? - Answers- A higher surface area-to-volume
ratio allows better (nutrient) chemical exchange with the environment, and thus, faster
growth.
Who are the microbes? - Answers- Organisms that are too small to be seen with the
naked eye. They include bacteria, archaea, fungi, protists (algae and protozoa), and
viruses.
What are some differences between prokaryotes and eukaryotes? - Answers-
Prokaryote cells lack a true nucleus, whereas Eukaryote cells have a true nucleus
Are viruses prokaryotes or eukaryotes? - Answers- Neither, they are non- living
particles.
single-celled organism that lack nuclei - Answers- Bacteria
A measure of length, the thousandth part of one millimeter, the millionth part of a meter
(1 microm = 1 x 10^-6 m) - Answers- Micron
A small organism, typically less than 100 microns long, cannot be seen with the naked
eye - Answers- Microbe
What is LUCA? - Answers- Last Universal Common Ancestor:
- had DNA as genetic material
- proteins and RNA to catalyze reactions
- a lipid cell membrane
using microbes to help clean polluted environments - Answers- Bioremediation
the collection of microbes that live in and on a human - Answers- Human microbiome
A system of multiple organisms that may be considered a single organism - Answers-
Supraorganism
DNA sequencing to identify which microbes are present in the environmental sample -
Answers- Metagenomics
What four properties are true of ALL microbial organisms? - Answers- ALL microbial
organisms are small, have cells, have a genome, and have ribosomes (to make
proteins).
Essentially, the defining feature of a microbe is __________. - Answers- Essentially, the
defining feature of a microbe is their size, they are small.
What is one key benefit of being small? - Answers- A higher surface area-to-volume
ratio allows better (nutrient) chemical exchange with the environment, and thus, faster
growth.
Who are the microbes? - Answers- Organisms that are too small to be seen with the
naked eye. They include bacteria, archaea, fungi, protists (algae and protozoa), and
viruses.
What are some differences between prokaryotes and eukaryotes? - Answers-
Prokaryote cells lack a true nucleus, whereas Eukaryote cells have a true nucleus
Are viruses prokaryotes or eukaryotes? - Answers- Neither, they are non- living
particles.
single-celled organism that lack nuclei - Answers- Bacteria
