chapter 1: introduction Flashcards
what is microbiology?
a section of biology that deals with organisms that are too small to see with the naked human eye
what are some examples of microorganisms?
bacteria, archea, fungi
what are the 2 types of microbial cells?
prokaryotes and eukaryotes
what is the difference between prokaryotes and eukaryotes?
prokaryotes lack a nucleus enclosed in a membrane
true/false : prokaryotes have organelles in their cells
false
what is another name for prokaryotes?
akaryotes
what is a cell?
the basic unit of life
usually, what are some things that cells have in common?
shape and organelles
true/false : microorganisms predate humans by millions of years
true
when did life start on earth?
about 4.5 billion years ago
what does it mean for microbes to be unibiqutous?
to be found in a variety of places
what is phylogeny?
the scheme that represents relatedness with organisms
what is taxonomy?
the science of classifying living things
what are the three domains?
bacteria, archea, eukaryotes
what are some characteristics of bacteria?
single celled, no membrane bound nucleus, unibiquotus
what helps separate archea from bacteria?
its MRNA sequence
plants and animals are usually ____ organisms
eukaryotic
what is a protist?
a single celled organism that is not a plant, animal or a fungus
what are some positive atributes to fungi?
making bread rise, cheese formation, anti biotics
what is a negative attribute to fungi?
disease in humans
where did people in the time of aristotle believe living organisms came from and what is this called?
nonliving organisms; spontaneous generation
who developed pasteurization?
louis pasteur
when was the first microscope made?
the early 1600’s
who was the first to publish drawings of fungus?
robert hook