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Questions and Answers
What did Cohn's discovery about boiling and sterilization suggest?
What did Cohn's discovery about boiling and sterilization suggest?
- Boiling was an effective means of sterilization
- Boiling was an unreliable method of sterilization (correct)
- Boiling killed only the vegetative cells, not the endospores
- Boiling killed all forms of Bacillus bacteria
What did Pasteur's experiments demonstrate about the origins of microorganisms in decaying matter?
What did Pasteur's experiments demonstrate about the origins of microorganisms in decaying matter?
- Microorganisms in decaying matter arise from contamination of the food
- Microorganisms spontaneously generate in decaying matter
- Microorganisms in decaying matter come from the air (correct)
- Microorganisms in decaying matter have no relation to those in the air
What was the key contribution of Robert Koch to microbiology?
What was the key contribution of Robert Koch to microbiology?
- Developing the endospore formation process
- Developing criteria to prove the cause of a disease (correct)
- Disproving the theory of spontaneous generation
- Discovering the genus Bacillus
What was the significance of Pasteur's swan-necked flask experiment?
What was the significance of Pasteur's swan-necked flask experiment?
What was the impact of the progress in microbiology during the 19th century?
What was the impact of the progress in microbiology during the 19th century?
Which of the following was NOT a key contribution of Louis Pasteur to microbiology?
Which of the following was NOT a key contribution of Louis Pasteur to microbiology?
Which scientist is credited with obtaining the first pure cultures of many soil and waterborne microorganisms using the enrichment culture technique?
Which scientist is credited with obtaining the first pure cultures of many soil and waterborne microorganisms using the enrichment culture technique?
Which of the following is NOT one of the key principles of Koch's postulates for establishing the causative relationship between a microorganism and a disease?
Which of the following is NOT one of the key principles of Koch's postulates for establishing the causative relationship between a microorganism and a disease?
Which scientist is credited with proposing the term 'chemolithotrophy' to describe the relationship between the oxidation of inorganic substances and energy production?
Which scientist is credited with proposing the term 'chemolithotrophy' to describe the relationship between the oxidation of inorganic substances and energy production?
Which scientist is credited with explaining the basic principles of virology by showing that the infectious agent responsible for tobacco mosaic disease was not a bacterium, but a new type of infectious agent that needed a living host to multiply?
Which scientist is credited with explaining the basic principles of virology by showing that the infectious agent responsible for tobacco mosaic disease was not a bacterium, but a new type of infectious agent that needed a living host to multiply?
Which scientist is credited with disproving the theory of spontaneous generation and establishing that microorganisms can only arise from pre-existing microorganisms?
Which scientist is credited with disproving the theory of spontaneous generation and establishing that microorganisms can only arise from pre-existing microorganisms?
Which scientist is credited with developing the Koch's postulates, a set of four criteria used to establish a causative relationship between a microorganism and a disease?
Which scientist is credited with developing the Koch's postulates, a set of four criteria used to establish a causative relationship between a microorganism and a disease?
Which of the following was a major challenge in growing the tuberculosis bacterium in the laboratory?
Which of the following was a major challenge in growing the tuberculosis bacterium in the laboratory?
What technique did Robert Koch develop to observe the tuberculosis bacterium in lung tissue samples?
What technique did Robert Koch develop to observe the tuberculosis bacterium in lung tissue samples?
What was the significance of Robert Koch's discovery of the tuberculosis bacterium?
What was the significance of Robert Koch's discovery of the tuberculosis bacterium?
Which two scientists are described as pioneering the transition to sub-branches of microbiology?
Which two scientists are described as pioneering the transition to sub-branches of microbiology?
What was a key challenge faced by Robert Koch in culturing the tuberculosis bacterium?
What was a key challenge faced by Robert Koch in culturing the tuberculosis bacterium?
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