The microbial world
A minute living thing that are too small to be seen with the unaided eyes are generally referred to as
microorganism
What are the types of microorganism
Bacteria
fungi
protozoa
archaea
multicellular animal parasites
algae
Joseph Lister
performed surgery under aseptic conditions using phenol
Give some examples of prokaryotes
bacteria and archaea
give some examples of eukaryotes
protozoa, fungi, algae
What are some of the shapes of bacteria
spiral, bacillus, coccus
The theory that all living things are composed of cells was marked after the discovery of cells of whom
Robert Hooke
one of the main composition of the bacterial cell wall is
peptidoglycan
Bacteria and archaea reproduce by what method of cell division
binary fission
does archaea have peptidoglycan in their cell walls
no
list some types of archaea
methane, salty environments, hot sulfurous water
is it true that fungus can be unicellular or multicellular
yes
most typical fungus occur as
mold or yeast
protozoa can move by what structure
pseudopods, cilia, flagella
chemicals produced naturally by bacteria and fungus to treat infections are called
antibiotics
who discovered penicillin
alexander Fleming
what is the name of the fungus from which penicillin was first isolated
P. chrysogenum
a field of study of fungus is called
mycology
a field of stud of protozoa and other parasitic worms is called
parasitology
In the scientific name, escherichia coli, escherichia is the
genus
all of the following are examples of biotechnology except which one
bacteria that cause disease
In pasteur's swan neck flask experiment, the importance of the S-shaped curves in the flasks was two-fold. The curves allowed entry of air, and yet excluded
airborne bacteria
Which is not a characteristic of the normal microbiota (normal flora)
regularly associated with disease
which of the following is not true of the archaea
they are commonly associated with human disease
pasteurization is used for all of the following purposes except
to remove all microorganism from food
increase shelf-life of food
which is not a characteristic of bacteria
bacteria have cell walls containing chitin
flagella are appendages that allow locomotion in bacteria
true
Methanogens, extreme halophils, extreme themophilis, are the types of
archaea
microorganisms whose DNA is not enclosed within a membrane and arranged in a single circular ring are classified as
prokaryotes
mad cow disease is caused by a prion which is an infectious
protein
all of the following are eukaryotes except
bacteria
which of the following groups is not resolved with the light microscope
viruses
in 1978 Carl Woese designed a system of classification based on cellular organization of organism. According to this classification all life can be classified into three domains:
bacteria, archaea, eukarya
In the bacterial name vibrio cholerae the word cholarae represents the
specific epithet
the process by which bacteria reproduce is known as
binary fission
which of the following is not a characteristic of bacteria
that they are all pathogenic
the first observations of bacteria and protozoa was made by
robert Hooke
the germ theory of disease was proven by
Koch
Which of the following is a scientific name
Legionella pneumonia
Using microbes to clean up pollutants is called
bioremediation
which one of the following is an example of bioremediation
use pseudomonas to remove uranium from soil at weapons depots
which one of the following was the most significant difference in the experiments that resulted in pasteur's proof of biogenesis being accepted over Needham's proof
air was present
pasteurization was first developed to kill
spoilage bacteria in wine
robert Koch's studies on bacillus anthracis established a sequence of experimental steps to prove that microbes
cause disease
how would you recognize an antibiotic producing soil bacterium on a plate crowded with other bacteria? the bacterial colony producing the antibiotic would be
surrounded by a clear area
the usefulness of antibiotics is hampered by
the emergence of antibiotic-resistant bacteria
mad cow is caused by a prion which is an infectious
protein
in a nomenclature system designed by Carolus Linnaeus each living organism is assigned two names
true
examples of fungi include yeast,molds, and mushrooms
true
E. coli O157:H7 is part of the normal microbiota in the human large intestine
false
Viruses can be only observed with a high power microscopy (+ oil)
false
Viruses contain DNA and RNA but not the cytoplasm
false
what was the major discovery of Edward Jenner
vaccination/immunity
What was the major discovery of Joseph Lister
aseptic techniques
Name the fungus identified by Alexander Fleming which produced a specific antibiotic that killed the bacteria on agar plate?
P. chrysogenum
who discovered salvarsan
Paul Ehrlich
Bacteriology
study of bacteria
virology
study of viruses
oncology
study of cancerous cells
mycology
study of fungi
parasitology
study of protozoa and parasitic worms
immunology
study of immunity
bioremediation
using microbes to clean up pollutants
insertion of a missing gene or replacing a defective one with the good gene in a human cell is called
gene therapy
Name few of the human genetic disorders which has been successfully treated with the gene therapy technique
duchene's muscular dystrophy, cystic fibrosis, etc
what is the difference between normal microbiota and pathogens
normanl microbiota doesn't harm humans while pathogens harm humans
what is the other term used to describe normal microbiota
flora
what does MRSA stand for
methicillin-resistant S. aureus
what is the scientific name for the mad cow disease
bovine spongiform encephalopathy
name the agent of creutzfeldt-jakon disease
prion
name the pathogenix strain of E. coli, which cause bloody diarrhea and kidney faillure
E. coli O157:H7
what does avirulence mean
less potent
what presented the germ theory of disease
that microorganisms might cause disease
the preventative measures in any procedure taken to avoid contamination by unwanted microorganisms is called
aseptic techniques
who demonstrated that microorganisms are present in the air and can contaminate sterile solutions, but that air itself does not create microbes
Louis Pasteur
scientists and philosophers believed that some form of life could arise from nonliving matter, they called the hypothetical process as:
spontaneous generation
what are the chemicals produced naturally by bacteria and fungi to act against other microorganisms is called
antibiotics
protection from disease provided by vaccination is called
immunity
an ability of our bodies to ward off diseases and overcome offensive tactics of microbes is called
resistance
what is the scientific term for a bird flu
avian influenza A
what is considered as a magic bullet against syphilis
salvarsan
prokaryotes
no nucleus
DNA in cells
bacteria and arcahea
eukaryotes
has nucleus
fungi, protozoa, algae
bacteria
organisms that can live on their own
prokaryotes
single-celled
divides via binary fission
cell wall contains peptidoglycan
archaea
three main groups (methanogens, extreme halophile, extreme thermophiles)
prokaryotes
cell wall lack peptidoglycan
found in extreme environments
fungi
eukaryotes
nucleus
can't carryout photosynthesis
classification of microorganisms
bacteria
archaea
eukarya
helminths
major groups of parasitic worms and flatworms
cell theory
all livings things are composed of cells
biogenesis
living cells arise only from preexisting living cells.
aseptic techniques
procedures that prevent contamination by unwanted microorganisms
germ theory of disease
microorganisms might cause diseases
carolus Linnaeus
system of nomenclature
theordore Escherich
discovered escherichia bacteria (E. coli)
Cael Woese
devised a system of classification based on cellular organization of organisms
Robert Hooke
discovery marked beginning of the cell theory
anton van leeuwenhoek
first to observe live microorganisms
francesco Redi
decaying meat experiment
rudolf virchow
theory of biogenesis
Louis Pasteur
microorganisms are present in the air and can contaminate sterile solutions
Joseph Lister
performed surgery under aseptic conditions using phenol
Koch's postulate
experimental steps for directly relating a specific microbe to a specific disease
Edward Jenner
discovered vaccination/immunity
chemotherapy
treatment of disease by using chemical substances
Paul Ehrlich
discovered salvarsan
speculated about "'magic bullet"
microbial ecology
study of the relationship between microorganism and their environment
gene therapy
inserting a missing gene or replacing a defective one in human cells