MCB3020 EXAM 1 Ashgari ACTUAL
Questions and CORRECT Answers
1. What is the role of microbes in maintain temperature on earth? (Role of microbes in CO2 and
CH4 recycling) - CORRECT ANSWER - they regulate Earth's temperature by balancing
the levels of CO2 and CH4 and can convert and recycle them which maintains the temperature
(interchanging carbon from one form to another)
2. List the top three cause of death in the US. How role of microbes has changes over the last 100
years - CORRECT ANSWER - - Heart diseases
- Cancer
-Stroke
- Antibiotics, vaccinations, and clean water / water treatment system made the biggest difference
in lowering the death rate the last 100 years
3. List the major contributions to the science of microbiology discussed in slide 3 - CORRECT
ANSWER -
Louis Pasteur: - CORRECT ANSWER - swan-neck flask experiment, spontaneous
generation theory disproved, also created pasteurization technique used to create wine and help
kill pathogens within food
Antony van Leeuwenhoek: - CORRECT ANSWER - created the first microscope and
discovered microorganisms
Edward Jenner: - CORRECT ANSWER - Produced the vaccine for smallpox
Ignaz Semmelweis: - CORRECT ANSWER - Advocated for washing your hands from
labor, said that the statistics of at home birth successes are higher in comparison to labors in the
hospital.
,Robert Koch: - CORRECT ANSWER - connected disease to microbes: one microbe = one
disease
John Snow: - CORRECT ANSWER - First established epidemiologist, which is someone
who finds the source of a diseases and learns to contain it from the source.
Paul Ehrlich: - CORRECT ANSWER - Advocate for chemotherapy, discovered cure for
syphilis
Alexander Fleming: - CORRECT ANSWER - Discovered antibiotics and penicillin
List and explain the impact of microbes on the environment (slide 4) - CORRECT
ANSWER - - Carbon cycle: convert organic to inorganic and vice versa
- Nitrogen cycle: most of the air we breathe is nitrogen, microbes convert it to ammonia so
humans can intake the air
- Biodiversity and abundance, considered first living creatures on earth
-Regulate temperature by regulating the balance of CH4 and CO2 in the environment
5. Define cell, microbe, and list hallmarks of cell. What is the status of Prions, virions, and
viruses? - CORRECT ANSWER - - Cell: Unit of life and made up of molecules,
prokaryotes and eukaryotes
- Microbe: used for bioremediation, bioreceptors entities that can not be seen with a naked eye
- Hallmarks of cell: every cell must be able to reproduce, have a source of energy, control flow
of things in and outside of the cell, have a cell membrane, genetic material made from DNA
- Prions: acellular causes animals and human diseases and is infections protein
, - Virions: acellular made of RNA, infectious agent, plant pathogens, infectious DNA
-Viruses: both protein and nucleic acid, can have either RNA or DNA
6. List effects of microbes on ecosystem. List extreme conditions at which microbes can thrive -
CORRECT ANSWER - - N2 gas into NH4 organic nitrogen
- Involved in Nitrogen, Carbon, Oxygen, and Sulfur Cycle
-Archaea can live in extreme conditions such as temperature, salinity and pH
7. Where in human body bacteria may be found? - CORRECT ANSWER - - Skin, mouth,
intestines, and colonize the body after birth
8. Which kingdoms and domains are prokaryotes and which ones are eukaryotes? Viruses? -
CORRECT ANSWER - Kingdoms:
Plants (Eukaryotes)
Animals (Eukaryotes)
Fungi (Eukaryotes)
Protozoans (Eukaryotes)
Monera (Prokaryotes)
Domains:
Eukarya (Eukaryotes)
Bacteria (Prokaryotes)
Archaea (Prokaryotes)
List membrane-bound organelles found in eukaryotes but not in prokaryotes. - CORRECT
ANSWER - Rough endoplasmic reticulum (ribosomes)
Questions and CORRECT Answers
1. What is the role of microbes in maintain temperature on earth? (Role of microbes in CO2 and
CH4 recycling) - CORRECT ANSWER - they regulate Earth's temperature by balancing
the levels of CO2 and CH4 and can convert and recycle them which maintains the temperature
(interchanging carbon from one form to another)
2. List the top three cause of death in the US. How role of microbes has changes over the last 100
years - CORRECT ANSWER - - Heart diseases
- Cancer
-Stroke
- Antibiotics, vaccinations, and clean water / water treatment system made the biggest difference
in lowering the death rate the last 100 years
3. List the major contributions to the science of microbiology discussed in slide 3 - CORRECT
ANSWER -
Louis Pasteur: - CORRECT ANSWER - swan-neck flask experiment, spontaneous
generation theory disproved, also created pasteurization technique used to create wine and help
kill pathogens within food
Antony van Leeuwenhoek: - CORRECT ANSWER - created the first microscope and
discovered microorganisms
Edward Jenner: - CORRECT ANSWER - Produced the vaccine for smallpox
Ignaz Semmelweis: - CORRECT ANSWER - Advocated for washing your hands from
labor, said that the statistics of at home birth successes are higher in comparison to labors in the
hospital.
,Robert Koch: - CORRECT ANSWER - connected disease to microbes: one microbe = one
disease
John Snow: - CORRECT ANSWER - First established epidemiologist, which is someone
who finds the source of a diseases and learns to contain it from the source.
Paul Ehrlich: - CORRECT ANSWER - Advocate for chemotherapy, discovered cure for
syphilis
Alexander Fleming: - CORRECT ANSWER - Discovered antibiotics and penicillin
List and explain the impact of microbes on the environment (slide 4) - CORRECT
ANSWER - - Carbon cycle: convert organic to inorganic and vice versa
- Nitrogen cycle: most of the air we breathe is nitrogen, microbes convert it to ammonia so
humans can intake the air
- Biodiversity and abundance, considered first living creatures on earth
-Regulate temperature by regulating the balance of CH4 and CO2 in the environment
5. Define cell, microbe, and list hallmarks of cell. What is the status of Prions, virions, and
viruses? - CORRECT ANSWER - - Cell: Unit of life and made up of molecules,
prokaryotes and eukaryotes
- Microbe: used for bioremediation, bioreceptors entities that can not be seen with a naked eye
- Hallmarks of cell: every cell must be able to reproduce, have a source of energy, control flow
of things in and outside of the cell, have a cell membrane, genetic material made from DNA
- Prions: acellular causes animals and human diseases and is infections protein
, - Virions: acellular made of RNA, infectious agent, plant pathogens, infectious DNA
-Viruses: both protein and nucleic acid, can have either RNA or DNA
6. List effects of microbes on ecosystem. List extreme conditions at which microbes can thrive -
CORRECT ANSWER - - N2 gas into NH4 organic nitrogen
- Involved in Nitrogen, Carbon, Oxygen, and Sulfur Cycle
-Archaea can live in extreme conditions such as temperature, salinity and pH
7. Where in human body bacteria may be found? - CORRECT ANSWER - - Skin, mouth,
intestines, and colonize the body after birth
8. Which kingdoms and domains are prokaryotes and which ones are eukaryotes? Viruses? -
CORRECT ANSWER - Kingdoms:
Plants (Eukaryotes)
Animals (Eukaryotes)
Fungi (Eukaryotes)
Protozoans (Eukaryotes)
Monera (Prokaryotes)
Domains:
Eukarya (Eukaryotes)
Bacteria (Prokaryotes)
Archaea (Prokaryotes)
List membrane-bound organelles found in eukaryotes but not in prokaryotes. - CORRECT
ANSWER - Rough endoplasmic reticulum (ribosomes)
