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132 Cards in this Set

  • Front
  • Back
Inventor of simple microspcopes, new
microscope for each specimen, called protozoa "animalcules"
Antoni van Leeuwenhoek
Developed taxonomic system for naming plants
Carolus Linnaeus
Science of naming and classifying organisms
taxonomy
Name the six categories of the taxonomic system that Leeuwenhoek's microorganisms were placed in
Fungi
Protozoa
Algae
Bacteria
Archaea
Small animals
Molds and yeast are part of the ___________ category
Fungi
early primitive/ simple animals are part of the _________ category
Protozoa
Single cell, photosynthetic microorganisms are part of the ______________ category
Algae
Prokaryotic microorganisms are part of the ______________ and __________________ category
Bacteria and Archaea
Worms and parasites are microorganisms in the _______________ category
small animals
A eukaryotic microorganism has a membrane bound ____________.
nucleus
_______________- are single celled eukaryotes
Protozoa
Protozoa are similar to ______________ in their nutritional needs and cellular structure
animals
Protozoa freely live in ____________ and some slive inside _________________-- hosts
water; animal
The cell extensions on protozoa that are similar to a "puddle" and flow in the direction of travel are
psuedopodia
Numerous short, hairlike protrusions that propel organisms through the environment are
cilia
Extensions of a cells that are fewer, longer, and whiplike than cilia are called
flagella
flagella are found on the male _________ cell
sperm
Algae can be ____ -cellular or _______-cellular
uni or multi
Algae is a photosynthetic microorganism which makes its own _________
food
Algae have simple ____________ structures
reproductive
Algae are categorized on the basis of pigmentation, storage products, and composition of _____________ ________
cell wall
Algae are categorized on the basis of ____________, storage products, and composition of the cell wall
pigmentation
Agar is
a carbohydrate, a basis for media and derived from algae
Diatoms are
examples of algae.
Diatomatous earth comes from
diatoms/algae - ground into powder, sprinkled in chicken coop
Bacteria and archaea are unicellular and lack
nuclei
bacteria and archaea are __________ and lack nuclei
unicellular
Capable of living in glaciers, hot springs, extremely hot/cold temps, salty, dry, etc. conditions
bacteria and archaea
Bacteria and archaea reproduce
asexually
Binary fission is an example of the asexual reproduction of
bacteria and archaea
The cell walls of bacteria contain _________________________
peptidoglycan
Most _______________ do not cause disease and are beneficial
bacteria
The cell walls are composed of polymers other than peptidoglycan
Archaea
Bacteria and archaea are divided into categories by cell walls that contain or do not contain
peptidoglycan
Bacteria and archaea are ___-karyotes
prokaryotes
________________ have no cell whatsoever. These are just a piece of DNA or RNA wrapped in protein
Viruses
These are also known as a macromolecule
Virus
______________ are capable of infecting and destroying
Viruses
A ___________________-phage literally eat their way through a lawn of bacteria
bacterio-phage
Scientists searched for answers to four questions in the ______ Age of Microbiology.
Golden
In the Golden Age of Microbiology scientists believes that "life coming out of nothing" also called _______________ was possible
Spontaneous generation
Scientists in the Golden Age of Microbiology asked what caused __________________- and ________________
fermentation and disease
fermentation is
a chemical reaction that produces acid, gas (and if alcohol-- ethanol)
In the Golden Age of Microbiology scientists asked how we can prevent ______________ and _______________.
infection and disease
Some philosophers and scientists in the past thought that living things arose from three processes which are:
1- asexual reproduction
2- sexual reproduction
3- from non-living matter
The scientist _____________ proposed spontaneous generation, that living things can arise from non-living matter
Aristotle
Redi most notable experiment with flasks of meat, sealed and unsealed and covered with gauze to disproved
spontaneous generation
People believed that microbes could arise spontaneously and _____________________ experiments with beef gravy and infusions of plant material reinforced this idea
Needham's
Scientists did not believe that animals could arise spontaneously, but did believe that _______________- microbes could
microbes
______________________ experiments concluded that _______________ experiments failed to heat vials sufficiently.
Spallanzani's ; Needhams
Spallanzani's experiments concluded that microorganisms exist in __________ and contaminate experiments
air
Spallanzani's experiments concluded that _____________________ __________________ of microorganisms doe snot occur
spontaneous generation
___________________ developed a technique for heating and cooling substances
Louis Pasteur
Pasteurization is a technique for :
heating and cooling substances
Four parts to the scientific method
1-observations lead to questions
2 - generates hypothesis (to give potential answer to question)
3- tests hypothesis with experiments
4- results of experiment either accepted, rejected, or modified hypothesis (ex: flashlight not working)
_______________ is credited with finding why wine was being spoiled
Louis Pasteur
Louis Pasteur's experiments on pasteurization involved the use of flasks in a number of positions in the scientific method shown in the following 4 steps
1-
2-
3-
4-
Buchner's experiments on _______________ Fermention
1-
Pasteur developed the _____________ theory of ____________.
germ; disease
Robert Koch studied the causative agents of disease and one in particular called
anthrax
_______________________-- came up with a variety of techniques to examine colonies of microorganisms
Robert Koch
Lab Advances by Koch included simple _________ techniques
staining
Koch is credited with the first _______________________ of bacteria
photomicrograph
CFU/ml means
colony forming unit per mililiter
_______ is credited with techniques for estimating CFU/ml
Koch
______ is credited for using steam to sterilize media
Koch
The use of petri dishes, aseptic techniques, and distinguishing bacteria as distict species is credited to
Robert Koch
Bacteria metabolize the nutrients in the medium which divides exponentially until a little lump is seen. This is called
colony forming unit/ml
Koch's Postulates were utilized in order to prove the __________________ or underlying cause of disease
etiology
Koch's Postulates stated the following 4 requirements
1- suspected causative agent must be found in every case of the disease and be absent from healthy hosts
2-Agent must be isolated and gown outsiden the host
3- when agent is introduced in healthy, suspectible host, the host must get the disease (ethical?)
4- same agent must be reisolated from diseased experimental host
Credited for handwashing
Semmelweis
Credited for antiseptic technique and experiments with chemicals
Joseph Lister
nursing
Nightingale
Credited for infection control and epidemiology
John Snow
Credited in the field of immunology
Jenner
Credited with "magic bullets" in the field of chemotherapy
Ehrlich
Biochemistry such as "production of toxins" answers the Modern Age of Microbiolgy question--
What are the basic chemical reactions of life?
The following modern ________- tell us how genes work
1- Microbial genetics
2- molecular biology
3- recombinant DNA technology
4- gene therapy
Environmental biology helps us to answer the question<
What role so microorganisms play in the environment?
Serology, immunology, and chemotherapy all help us answer "How do we defend against ______________/"
disease
Biochemistry began with Pasteur's work on ________ and Buchner's discovery of enzymes in _____________ extract
fermentation; yeast
Biochemistry includes experiments by Klyver and van Neil where microbers are used as _______________ systems for biochemical reactions
model
Practical applications of biochemistry include:
1- design of herbicides and pesticides
2- diagnosis of illnesses and monitoring of patient's responses to treatment
3-Treatment of metabolic diseases
4- drug design
Microbial genetics helps us to learn about the physiology of microbes that won't grow in a __________ ______
Petri dish
Avery, McCLoud, and McCarty determined that genes are contained in molecules of ______
DNA
Beadle and Tatum established that a gene's activity is related to ____________ ________
protein function
The study of cancer is a good example of how cells control _________ ___________
genetic expression
When the mechanisms that control at what rate your cells divide are out of whack, this is an example of rates and mechanisms of
genetic mutation
Alexander Fleming discovered the first antibiotic called
penicillin
Domagk discovered
sulfa drugs
How organisms relate to each other is a study of _____________ biology
molecular
Recombinant DNA Technology is applied when ______ in microbes, plants, and animals manipulated for practical applications.
genes
The production of human blood-clotting factor by E.coli to aid hemophiliacs is a form of :
recombinant DNA Technology
________ _______ is where you insert a missing gene or repairing a defective one in humans by inserting desired gene into host cells
Gene therapy
Viruses can come in handy because they can deliver genes into __________.
genes
_______________ is the study of the body's defense against specific pathogens
Immunology
__________- is the study of blood serum
Serology
Von Behring and Kitasato were credited with identifying the existence of _____________ and cells in the ____________ that fight infection
chemicals; blood
_____________ ___________ involves the recycling of chemicals such as carbon, nitrogen, and sulfur
Environmental biology
Bioremediation is the use of living ______, ______, and __________ to detoxify polluted environments
bacteria, fungi, and algae
The four processes of life are:
1- Growth
2- Reproduction
3- Responsiveness
4- Metabolism
The basic funtional unit of life are
cells
Every cell metabolizes ___________.
nutrients
Prokaryotes do not have membrane surrounding their DNA and they have no ______.
nucleus
_____________ lack various internal structures bound with phospholipid membranes, such as ER and golgi apparatus.
Prokaryotes
Prokaryotes are ______; approximately 1.0 _______ in diameter.
small; micrometer
Prokaryotes have a simple/complex structure.
simple
Bacteria and archaea are
prokaryotes
These have no paired chromosomes
Prokaryotes
Eukaryotes have a membrane surrounding ______; and they have a _______.
DNA; nucleus
Eukaryotes have internal membrane-bound ____________.
organelles
Eukaryotes have a more complex
structure
Algae, protozoa, fungi, animals, and plants are all
eukaryotes
Everything other than bacteria and archaea are
eukaryotes
______________ stain darker under the microscope, they are usually packets of lipids, proteins, etc.
Inclusions
Some, but not all bacteria have _____________, a whip-like tail
flagella
Prokaryotes have a _________ where DNA happens to be clumped together and looks like a big clump of spaghetti
nucleoid
Eukaryotes have a _________ envelope
nuclear
The ribosomes of the eukaryote is bound to the
ER
The arms and legs of prokaryotice cells are called
fimbrae and pili
Flagella and glycocalyces are external structures of
prokaryotic cells
A gelatinous sticky substance surrounding the outside of the cell is called a
glycocalyx (singular)
The _________________ in a glycocalyx makes it sticky which helps to hold a colony together
polysaccarides
______________ are comprised of polysaccharides, polypeptides, or both
glycocalyces
There are two types of glycocalyces:
capsule
slime layer
The glycocalyces capsule is more firm and more cohesive than the slime layer and is composed of organized repeating units of :
organic chemicals
The capsule glycocalyx is firmly attached to the _______ surface
cell
The main function of the capsule glycocalyx is to prevent cells from _________ _________.
drying out
The ________________- ______________ may prevent bacteria from being recognized and destroyed bythe host
Glycocalyx capsule
It is difficult for a macrophase to get around them and engulf them because the ___________ _______ are slippery.
glycocalyx capsule
The glycocalyx _______________ is loosely attached to the cell surface
slime layer
The glycocalyx ___________ is water soluble
slime layer