CH1 and CH 10 Questions

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which of the following individuals is considered to be the "father of microbiology"

Anton van Leeuwenhoek

the microbes that usually live on or in a person are collectively referred to as

indigenous microflora

microbes that live on dead and decaying organic material are know as

saprophytes

the study of algae is called

phycology

the field of parasitology involves the study of whiche of the following types of organisms

arthropods, helminths and certain protozoa

Rudolf Virchow is given credit fro proposing which of the following theories

biogenesis

which of the following microbes are considered opligate intracellular pathogen

ricketts, chlamydias and viruses

which of the following statements is true

microbes are ubiquitous (virtually everywhere)

which of the following are even smaller than viruses

prions and viroids

Louis Pasteur

pasteurization
introduced the terms aerobes and anaerobes
developed vaccines for anthrax and rabies
disproved spontaneous generation
germ theory contributions that specific genes cause specific infections. ex: anthras, TB

Anton van Leeuwenhoek

first person to observe live bacteria and protozoa
untrained
father of microbiolgy
created the single-lens/single microscope

Robert Koch

developed an experimental procedure that could be used to prove that a specific microorganism is the cause of a specific infectious disease
methods of fixing, staining and photographing bacteria
germ theory-led to Koch's Postulates
cultivating bacteria on a olid medis

Rudolf Virchow

proposed the theory of biogenesis

Alexandre Emil Jean Yersin

discovered the causative agent of the plague

all infectectious diseases are caused by pathogens

all infectectious diseases are caused by pathogens

pathogens greathly out number nonpathogens

false (the reverse is true)

using microorganisms to clean up the environment is known as bioremediation

true

microorganisms are essential in the field of genetic engineering

true

microorganisms appeared on earth about 3.5 million years ago

false-3.5 billion years ago

Anton van Leeuwenhoek's experiments helped to prove that microorganisms cause diseas

false

Louis Pasteur and Robert Koch made significnt contributions to the "Germ Theory of Disease"

true

Pasteurization is a process that kills all microorganisms present in the liquid being pasturized

false-designed to kill pathogens

microorgaisms contribute more oxygen to our atmosphere than plants do

true

infectious diseases that are transmitted from animals to humans are known as zoonoses

true

anton van leeuwenhoek "1632-1723"

the "father of microbiology", but he was not a trained scientist. created the single len microscope. came up with the idea spontaneous generation or "abiogenesis".

rudolf virchow "1858"

first proposed the theory of biogenesis, which is that life can only arise from preexisting life.

louis pasteur "1822-1894"

came up with pasteurization, while trying to find a way to stop wine from spoiling. stated that specific microbes cause specific infectious disease. he developed vaccines, most known for rabies vaccine

robert koch "1843-1910"

developed methods of fixing, staining, and photographing bacteria. cultivated bacteria of solid media. one of his colleages was RJ petri-"petri dish". discovered the bacterium that causes tuberculosis. developed the skin test for TB. Koch's postulets.

a symbiont could be a (an)

commensal, opportunist, parasite

the greatest number and vaiety of indigenous microflora of the human body live in or on the

colon

escherichia coli living in the human colon can be considered to be a (an)

endosymbiont, opportunist, symbiont in a mutulistic relationship

which of the following sites of the hyman body does not have indigenous microflora

blood, lymp, spinal fluid, most internal tissues and organ, fetus, inner ear, eyes

which of the following would be present in hightes numbers in the indigenous microflora of the human mound

alph-hemolytic stereptocci

which of the follwoing would be present in highest numbers in the indigenous microflora of the skin

coagulase-neagtive staphylococci

the indigenous microflora of the external ear canal is most like the indigenous mircroflora of the

skin

which of the following are least likely to play a role in the nirtogen cycle

indigenous microflara

microorganisms are used in which of the following industries

anitibiotic, chemical, food, beer, and wine

the term that best describes a symbiotic relationship in which two differnent microorgaisms occuppy the same ecologic niche, but have absolutely no efffect on each other

neutralism

neutralism

when two microorganisms occupying the same environmental niches have absolutely no effect on each other

synergism

bacterial vaginosis is an example of

commensalism

a symbiotic relationship of benefit to one of the symvionts, but neither beneficial nor harmful to the other
ex: Demodex

parasitism

a symbiotic relationship of benefit to one of the symbionts and detrimental to the other
ex: Trypansoma gamviense

mutualism

E. coli or a licjhen is an example of

saprophytes

lives on dead or decaying organic matter, aiding in fertilization of soil

no microorganisms are able to live in the stomach, owing to the extremely low ph of the stomach contents

false (H.pylori live there)

microbial communities know as biofilms are interestin, buty they have no medical significance

false

microoorgaisms are unable to live in the colon because of the lack of oxygen

false (they are aerotolerant)

some of the bacteria used in bioremediation are naturally occurring, but other have been genetically engineered

true

many of the members of our indigenous microflora have the potential to cause disease

true

there could be as many as 100 trillion microorganisms tha tlive on us and in us

true

the most common organisms in the indigeouns microflora of the outh are various species of b-hemolytic streptococci

false (alph-streptococi)

microbes cause thousands of different types of plant diseases

true

most relationships between humans and microbes are beneficial rather than harmful

true

beneficial microoorgaisms far outnumber harmful ones

true

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