Module 1 Practice Questions Flashcards
When humans manipulate microorganisms to make products in an industrial setting.
Ex: Some specialized bacteria have unique capacities to mine precious metals or clean up human-created contamination.
Biotechnology
What are required for proper isolation of micros?
Inoculation tools
Agar in a petri dish
An area of biotechnology that manipulates the genetics of microbes, plants, and animals for the purpose of creating new products and genetically modified organisms (GMOs)
Ex: Recombinant DNA Tech: makes it possible to transfer genetic material from one organism to another and deliberately alter DNA.
Genetic Engineering
Refers to the ability of microorganisms–ones already present or those introduced intentionally–to restore the stability of an ecosystem or to clean up toxic pollutants.
Bioremediation
Bacteria invented photosynthesis long before the first plants appeared, first as a process that did not produce oxygen
Anoxygenic Photosynthesis
Name four disease processes where microbial infection has been implicated.
Gastric ulcers
DM1
Schizophrenia
Obesity
In general, bacterial and archaeal cells are about 10x smaller than _______ cells.
eukaryotic cells
The belief that invisible vital forces present in matter led to the creation of life.
Spontaneous Generation
The belief in spontaneous generation as a source of life.
Abiogenesis
a= without
bio= life
genesis= beginning
The belief that living arise only from others of their same kind.
Biogenesis
Demonstrated using swan flasks that dust were a source of microbes
Louis Pasteur
Probably the earliest record of microbes is in the works of
Robert Hooke
Eventually became interested in more than just thread count and used his finest lens to find “animalcules” in rainwater; he also looked at plaque on teeth.
Antonie van Leeuwenhoek
What microbes does “animalcules” refer to?
Protozoa and bacteria
Three scientists discovered little molecular “scissors” inside bacteria. The scissors chop up DNA in specific ways, and enabled scientists to cut DNA in tailored ways. Opened up floodgates for genetic engineering.
Discovery of restriction enzymes 1970s
A breakthrough in our ability to detect tiny amounts of DNA and then amplify it into quantities sufficient for studying.
Polymerase Chain Reaction technique 1980s
The discovery that perhaps only 2% of DNA codes for a protein, so much RNA doesn’t end up with a protein counterpart–thus they have critical roles in regulating what happens in the cell.
The importance of small RNAs 2000s
The discovery that even though the exact types of microbes found in and on different people are highly diverse, the overall set of metabolic capabilities the bacterial communities possess is remarkably similar among people.
Genetic Identification of the Human Microbe 2010s and beyond
Formulate a question Do background research Construct hypothesis Test hypothesis Analyze data and reject or accept hypothesis Communicate results
Scientific Method
The discovery and detailed description of heat-resistant bacterial endospores was by
Ferdinand Cohn
First to introduce aseptic technique
English surgeon Joseph Lister
A theory originating in the 1800s that proposed that microorganisms can be the cause of diseases; so well established that it is considered a fact.
The Germ Theory of Disease
Bacterium that causes anthrax
Bacillus anthracis
Four main families of macromolecules
Lipids, nucleic acids, carbohydrates, proteins