29 Questions
Which of the following is NOT a characteristic of prokaryotes?
Genome organized into linear chromosomes
Which of the following is NOT a common element of both prokaryotic and eukaryotic cells?
Cell wall
What is the function of ribosomes in microbial cells?
Synthesize proteins
Which of the following is NOT one of the three major cell lineages (domains)?
Prokaryotes
Which disease did Edward Jenner discover could give cross-immunity to smallpox?
Cowpox
Which of the following is a key reservoir of carbon, nitrogen, and phosphorus on Earth?
Marine subsurfaces
Who developed the enrichment culture technique?
Martinus Beijerinck
What is the name of the major crop plant that lives in close association with nitrogen-fixing bacteria?
Legumes
Which bacterium is responsible for the bubonic plague, also known as the Black Death?
Yersinia pestis
Which of the following is a microbial ecosystem found in the digestive chamber of ruminant animals?
Rumen
What did Robert Koch discover about bacteria in the blood of animals with anthrax?
Bacteria were always present in the blood
What is the term for bacteria and viruses that cause diseases?
Pathogens
What did Sergei Winogradsky describe?
Chemolithotrophs
What disease did Pasteur develop a successful vaccine for in 1885?
Rabies
Which of the following is a method used in the food industry to preserve food and give it flavor?
Fermentation
What is the goal of bioremediation?
To consume spilled oil and other pollutants
What did Louis Pasteur's research show about alcoholic fermentation?
It is caused by the growth of microorganisms
What did Antoni van Leeuwenhoek observe using his single lens microscope?
Bacteria
What did Robert Hooke publish in 1665?
A book on microscopic observations
The genome of a cell is made up of millions of base pairs of DNA which is different in each microorganism.
True
A cyanobacterium was the start of the anaerobic organism in Earth's evolution. They were the first that organisms to be able to use oxygen in energy production and started the world we live in today.
False
A bacteria that grows in extreme conditions in which most microorganisms are unable such as extreme pressure, temperature, NaCl concentration, osmolarity and pH changes are .
Cellulose is not able to be digested without a microbial environment called rumen. This microbial community is able to ferment cellulose by breaking down to cell wall.
True
The importance of a GI microbio.
human require microbial intervention for folic acid production
The process of fermentation uses microorganisms to produce perceived foods and give them differing flavours.
True
Methanogens produce methane by an anaerobic metabolism.
True
Pasteur's experiment was the way in which effective sterilization was produced and spontaneous generation was disproven. What is not one of the parts to the Experiment?
The experiments require the neck of the flask to be flamed prior to the introduction of the liquid culture to the flask. This prevents all existing microorganisms in existence to be killed prior to the experiment's initiation.
A pure culture contains a single kind of microorganism on a liquid nutrient solidified with gelatin or agar.
True
The black death is an important part of microbial history. Which one of the options is most correct?
The spread of this bacteria was through biting "sylvatic cycle". Starting with the infected rodents and their associated fleas. These fleas would get infected with this bacteria and could bite a human afterwards. When the infected flea bites a human the bacteria is regurgitated by an enzymatic activity into the humans flesh.
Test your knowledge on the origin of domains and the determination of phylogenies in this quiz. Explore the concept of the last universal common ancestor (LUCA) and the three major cell lineages: Bacteria, Archaea, and Eukarya. Learn about the evolutionary relationships between these domains and discover how phylogenies are determined.
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