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