MCB3020 Asghari Exam 1 Questions and Answers (Graded A)
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MCB3020
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MCB3020
MCB3020 Asghari Exam 1 Questions and Answers (Graded A)MCB3020 Asghari Exam 1 Questions and Answers (Graded A)MCB3020 Asghari Exam 1 Questions and Answers (Graded A)MCB3020 Asghari Exam 1 Questions and Answers (Graded A)MCB3020 Asghari Exam 1 Questions and Answers (Graded A)
What is the role of ...
MCB3020 Asghari Exam 1 Questions and
Answers (Graded A)
What is the role of microbes in maintaining temperature on earth? (Role of microbes in CO2 and CH4
recycling) - ANSWER - - Without the help of microbes to break down organic materials, the progress of
life on Earth would be constrained by the fixed amount of materials available to produce biomass
- Impact on atmospheric CO2 and CH4 levels, which impacts global climate change
- These greenhouse gases accumulate in the atmosphere, forming a "blanket" that traps heat
- The Earth would be uninhabitable without these gases, but the accumulation of gases in the
atmosphere cause global temperatures to gradually increases
- Microbes both consume and produce these gases, so they are deeply involved in carbon recycling
Top 3 causes of death - ANSWER - heart disease, cancer, stroke
aristotle - ANSWER - Greek philosopher who proposed the idea of spontaneous generation
spontaneous generation - ANSWER - suggests that living things could spontaneously arise from nonliving
things
Louis Pasteur - ANSWER - A French chemist, who disproved the theory of spontaneous generation
through the "swan neck flask experiment"
- germ theory of disease
Robert Hooke - ANSWER - coined the term "cell"
Antony can Leeuwenhoek - ANSWER - invented first microscope, first person to actually visualize
microbes
do viruses have kingdoms - ANSWER - viruses do not belong to any of the kingdoms or domains because
they are acellular and nonliving
, List membrane-bound organelles found in eukaryotes but not in prokaryotes. - ANSWER - Nucleus,
endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria and chloroplasts
Edward Jenner - ANSWER - developed first vaccine - the smallpox vaccine
Ignaz Semmelewis - ANSWER - dutch physician who advocated hand-washing
John Snow - ANSWER - father of epidemiology
Robert Koch - ANSWER - - stated Koch's postulates: criteria designed to establish a causal relationship
between a microbe and disease
- one microbe, one disease idea
Paul Ehrlich - ANSWER - Pharmacist who mixed and matched chemicals in order to find "magic bullets"
for a disease - chemicals that selectively killed the disease without harming human cells
Alexander Fleming - ANSWER - Discovered penicillin, first antibiotic
Frederick Griffith - ANSWER - discovered genetic transformation
James Watson and Francis Crick - ANSWER - discovered the structure of DNA
List and explain the impact of microbes on the environment (slide 4) - ANSWER - flow of energy, primary
producers, regulation of temp, symbiosis
cell - ANSWER - fundamental unit of life
microbe - ANSWER - An organism invisible to the naked eye, especially one that causes disease
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