BIOS 242 Microbiology Exam 1
QUESTIONS AND VERIFIED
CORRECT ANSWERS LATEST
2026-2027
factors (specific vitamins, amino acids) that certain species require in order to grow. It is under
the functional type of 3 ways how media can be classified
selective media - CORRECT ANSWER-Suppress unwanted microbes and encourage desired
microbes. encourages a select microorganism to grow by containing one or more agents that
inhibit the growth of other microorganisms. It is under the functional type of 3 ways how media
can be classified
differential media - CORRECT ANSWER-allow multiple types of microorganisms to grow. Allow
multiple types of microorganisms to grow, but display visible differences between colonies. It is
under the functional type of 3 ways how media can be classified
3 types of media - CORRECT ANSWER-1. selective
2. complex
3. differential
contrast - CORRECT ANSWER-Contrast degree to which an object stands out from it's
surroundings. Contrast is measured by a quality called the refractive index. Refractive index
refers to the degree of bending that light undergoes as it passes from one medium (such as
water or glass) to another medium, such as some bacterial cells.
, resolution - CORRECT ANSWER-Capacity of an optical system to distinguish or separate two
adjacent objects or points from one another. The human eye can resolve two small objects as
separate points just as long as the two objects are 0.1 - 0.2 millimeters apart.
Louis Pasteur - CORRECT ANSWER-A French chemist, this man discovered that heat could kill
bacteria that otherwise spoiled liquids including milk, wine, and beer.
Louis Pasteur #2 - CORRECT ANSWER-Pasteur discovered through experiment that life doesn't
create out of nothing. He disproved the theory of spontaneous generation through his swan-
neck experiment.
Father of Microbiology - CORRECT ANSWER-Louis Pasteur
Robert Koch - CORRECT ANSWER-laid down the conditions, known as Koch's postulates, which
must be satisfied before it can be accepted that particular bacteria cause particular diseases
John Snow - CORRECT ANSWER-"Father of Epidemiology", studied the London Cholera
epidemics of 1848 & 1854, suspected it was from the water, as most cases were found close to
the Broad Street pump.
Found the causative agent of a cholera outbreak in England in 1854. He drew and created a map
to conclude where the source of an outbreak of a disease. This is kind of like epidimielogy.
John Lister - CORRECT ANSWER-Revolutionized sterilizing instruments and antiseptic spray for
surgery. First to utilize hand washing and misting operating rooms with antiseptic chemicals
Promoted disinfecting hands and air prior to surgery via carbolic steam spray apparatus
Carl Linnaeus - CORRECT ANSWER-"Father of Taxonomy"; established his classification of living
things; famous for animal naming system of binomial nomenclature
QUESTIONS AND VERIFIED
CORRECT ANSWERS LATEST
2026-2027
factors (specific vitamins, amino acids) that certain species require in order to grow. It is under
the functional type of 3 ways how media can be classified
selective media - CORRECT ANSWER-Suppress unwanted microbes and encourage desired
microbes. encourages a select microorganism to grow by containing one or more agents that
inhibit the growth of other microorganisms. It is under the functional type of 3 ways how media
can be classified
differential media - CORRECT ANSWER-allow multiple types of microorganisms to grow. Allow
multiple types of microorganisms to grow, but display visible differences between colonies. It is
under the functional type of 3 ways how media can be classified
3 types of media - CORRECT ANSWER-1. selective
2. complex
3. differential
contrast - CORRECT ANSWER-Contrast degree to which an object stands out from it's
surroundings. Contrast is measured by a quality called the refractive index. Refractive index
refers to the degree of bending that light undergoes as it passes from one medium (such as
water or glass) to another medium, such as some bacterial cells.
, resolution - CORRECT ANSWER-Capacity of an optical system to distinguish or separate two
adjacent objects or points from one another. The human eye can resolve two small objects as
separate points just as long as the two objects are 0.1 - 0.2 millimeters apart.
Louis Pasteur - CORRECT ANSWER-A French chemist, this man discovered that heat could kill
bacteria that otherwise spoiled liquids including milk, wine, and beer.
Louis Pasteur #2 - CORRECT ANSWER-Pasteur discovered through experiment that life doesn't
create out of nothing. He disproved the theory of spontaneous generation through his swan-
neck experiment.
Father of Microbiology - CORRECT ANSWER-Louis Pasteur
Robert Koch - CORRECT ANSWER-laid down the conditions, known as Koch's postulates, which
must be satisfied before it can be accepted that particular bacteria cause particular diseases
John Snow - CORRECT ANSWER-"Father of Epidemiology", studied the London Cholera
epidemics of 1848 & 1854, suspected it was from the water, as most cases were found close to
the Broad Street pump.
Found the causative agent of a cholera outbreak in England in 1854. He drew and created a map
to conclude where the source of an outbreak of a disease. This is kind of like epidimielogy.
John Lister - CORRECT ANSWER-Revolutionized sterilizing instruments and antiseptic spray for
surgery. First to utilize hand washing and misting operating rooms with antiseptic chemicals
Promoted disinfecting hands and air prior to surgery via carbolic steam spray apparatus
Carl Linnaeus - CORRECT ANSWER-"Father of Taxonomy"; established his classification of living
things; famous for animal naming system of binomial nomenclature
