GCU BIO-205 Exam 1 Questions Answered (Latest 2025)
Assured Success
Anton van Leeuwenhoek - correct answer Father of microbiology
Created 1st magnifying glass
Coined the term 'Animalcules'
Animalcules - correct answer First term used to describe microorganisms
What is the theory of Spontaneous Generation? - correct answer Life arises
spontaneously from non-living material (abiogenesis)
Who were the scientists involved in the theory of spontaneous generation? -
correct answer Francesco Redi (meat in jars experiment)
Louis Pasteur (Swan Neck Flask experiment)
John Tyndall (found heat resistant microbes)
Ferdinand Cohn (discovered endospores)
Robert Koch (discovered anthrax disease by spore forming bacteria)
,What were the structures present in hay infusions? - correct answer Heat
resistant microbes called endospores
Which experiment disproved TSG (theory of spontaneous generation)? - correct
answer Louis Pasteur swan neck flask experiment
What is bioremediation? - correct answer The use of microorganisms to clean
pollution
How do viruses grow? - correct answer They cannot reproduce on their own.
The must use a living host cell
What does the resolving power of a microscope do? - correct answer
Distinguish two objects that are close together
, What does immersion oil do? - correct answer Increases resolution and
decreases light refraction
Which microscope is used to observe a specimen at the atomic level? - correct
answer Atomic Force Microscope (1980)
What does positive staining do? - correct answer Contains positive charge that
dyes the cells
What does negative staining do? - correct answer Contains negative charge
that dyes the background
Which dyes contain a positive charge? - correct answer Basic dyes
Which dyes contain a negative charge? - correct answer Acidic dyes
Assured Success
Anton van Leeuwenhoek - correct answer Father of microbiology
Created 1st magnifying glass
Coined the term 'Animalcules'
Animalcules - correct answer First term used to describe microorganisms
What is the theory of Spontaneous Generation? - correct answer Life arises
spontaneously from non-living material (abiogenesis)
Who were the scientists involved in the theory of spontaneous generation? -
correct answer Francesco Redi (meat in jars experiment)
Louis Pasteur (Swan Neck Flask experiment)
John Tyndall (found heat resistant microbes)
Ferdinand Cohn (discovered endospores)
Robert Koch (discovered anthrax disease by spore forming bacteria)
,What were the structures present in hay infusions? - correct answer Heat
resistant microbes called endospores
Which experiment disproved TSG (theory of spontaneous generation)? - correct
answer Louis Pasteur swan neck flask experiment
What is bioremediation? - correct answer The use of microorganisms to clean
pollution
How do viruses grow? - correct answer They cannot reproduce on their own.
The must use a living host cell
What does the resolving power of a microscope do? - correct answer
Distinguish two objects that are close together
, What does immersion oil do? - correct answer Increases resolution and
decreases light refraction
Which microscope is used to observe a specimen at the atomic level? - correct
answer Atomic Force Microscope (1980)
What does positive staining do? - correct answer Contains positive charge that
dyes the cells
What does negative staining do? - correct answer Contains negative charge
that dyes the background
Which dyes contain a positive charge? - correct answer Basic dyes
Which dyes contain a negative charge? - correct answer Acidic dyes
