Microbiology BIO 420 Exam 1| Contains Questions
with Verified Correct Answers| Already Graded A+
QUESTIONS ANSWERS
______________Was the first Robert Hooke
person to view the smallest
structures composing all living
things which he termed as cells
Biogenesis states that___ All living forms arose from preexisting living forms
Luis pasteur in 1861 while Biogenesis, spontaneous generation
working for the wine industry to
improve the shelf life of wine,
proved ___by disproving ___using
a unique vessel that would allow
air to enter but trap dust and
dirt
Peptidoglycan is made up of which Alternating series of glycan chains (NAM and NAG), Tetrapeptide
of the following? chain
Up until the second half of the spontaneous generation
19th century, many scientists
believed that life could arise
spontaneously from nonliving
matter By a process known as
Leeuwenhoek's discovery cell theory
marked the beginning of
the
The argument against spontaneous biogenesis
generation was finally introduced
by a German Scientist Rudolf
Virchow
introduced the concept of
Page 1
,Fermentation The chemical action of yeast on sugars
Pasteurization treating a substance with heat to kill or slow the growth of
pathogens
Germ Theory of Disease idea that infectious diseases are caused by microorganisms
____advocated hand washing to Ignaz Semmelweis
prevent
transmission of puerperal fever
from one OB patient to
another
___inoculated a person with Edward Jenner
cowpox virus, who was then
protected from smallpox
Vaccination is derived from , for vacca, immunity
cow
The protection is called___
Applying Pasteur's work showing Joseph Lister
that
microbes are in the air, can spoil
food, and cause animal diseases,
___ used a chemical disinfectant
(carbolic acid) to prevent
surgical wound infections
__ proved that a bacterium causes Robert Koch, Koch's postulates
anthrax
and provided the experimental
steps,
__ to prove that a specific microbe
causes
a specific disease
Like Bacteria, Archaea are prokaryotic
Similar shapes, sizes, and
Archaea appearances to Bacteria Multiply
via binary fission
May move via
flagella Rigid
cell walls
Page 2
, Single-celled
prokaryotes
Prokaryote =
"prenucleus"
Bacteria No membrane-bound nucleus
No other membrane-bound
organelles DNA in nucleoid
Most have specific shapes (rod, spherical, spiral)
Rigid cell wall contains peptidoglycan (unique
to bacteria) Multiply via binary fission
Many move using flagella
Eukaryotes = "true nucleus"
Membrane-bound nucleus and other
organelles More complex than
Eukarya
prokaryotes
Microbial members include fungi,
algae, protozoa Algae and protozoa
also termed protists
Some multicellular parasites including helminths
(roundworms, tapeworms) considered as well
Non-Living forms Viruses, viroids, prions
Page 3
, Coccus:
spherical Rod:
Two os the most common types
cylindrical
of Prokaryotic Cells
Vibrio
Spirillum
Spirochete
Most prokaryotes divide by Binary fission
Growth Arrangement image
The Prokaryotic Cell image
The Cytoplasmic Membrane
image
French chemist Louis father of modern microbiology
Pasteur considered
Page 4