BIO 235 Exam 1 Questions With Verified Answers 2024/2025
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Course
Biology 235
Institution
Biology 235
BIO 235 Exam 1 Questions With Verified Answers 2024/2025
Microbiology is the study of?
microorganisms
Prokaryotes are organisms that lack;
lack a nucleus and other organelles.
Eukaryotes have
nucleus and membrane bound organelles
Bioremediation involves the use of microbes to;
r...
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BIO 235 Exam 1 Questions With Verified
Answers 2024/2025
Microbiology is the study of?
microorganisms
Prokaryotes are organisms that lack;
lack a nucleus and other organelles.
Eukaryotes have
nucleus and membrane bound organelles
Bioremediation involves the use of microbes to;
reduce pollution through the biological degradation of pollutants into non-toxic substances.
Four benefits of microbes;
contribute to digestion, produce vitamin K, promote development of the immune system, and
detoxify harmful chemicals.
Microbes that enter into and damage a host are;
A pathogen
Spontaneous generation;
Hypothesis stating that life could arise from nonliving matter.
Biogenesis;
development of life from preexisting life
Which scientist disproved spontaneous generation with his invention of the swan-neck (s-shaped)
flask?
Pasteur
Van Leeweunhoek was credited with the first;
discovery of microbes
Nomenclature -
naming system
Taxonomy -
The scientific study of how living things are classified
Write the proper nomenclature for a microbe and explain how handwriting nomenclature is different
from typed nomenclature.
The current nomenclature for bacterial species requires a capital letter for the genus name and an
epithet beginning by a lowercase letter for the species name.
, Three domains of life;
Bacteria, Archaea, Eukarya
The study of evolutionary relatedness of organisms to a common ancestor is known as:
Phylogenetics
Prokaryotes are
single celled organisms lacking a true nucleus and nuclear membrane.
Eukaryotes vs Prokaryotes
eukaryotes have a nucleus and prokaryotes do not
Resolving power is the ability of a microscope to:
accurately distinguish between two separate objects
A specimen is being examined under the 10x objective lens. What is the TOTAL magnification of the
virtual image seen on the microscope?
100x magnification
Dark-field microscopes examine images using a _____ field and a ____ specimen.
Dark field and light specimen
Fluorescent microscopes use __________ to emit visible light when developed with UV rays.
Dyes
Transmission electron microscope
An electron microscope used to study the internal structure of thin sections of cells.
Scanning electron microscope
An electron microscope used to study the fine details of cell surfaces
Positive staining uses ______________ dyes that are attracted to negatively charged components of
the cell.
crystal violet or methylene blue
THE 6 I'S OF MICROBIOLOGY
1. Inoculation
2. Incubation
3. Isolation
4. Inspection
5. Information gathering
6. Identification
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