chapter 1 Flashcards
(32 cards)
microorganisms include
bacteria, viruses, fungi, protozoa, helminths, algae
prokaryotes are
pre-nucleus, simple cells
eukaryotes are
true nucleus, complex cells
prokaryotes are microscopic…
unicellular organisms that lack nuclei and membrane-bound organelles
eukaryotes are unicellular AND
multicellular and have a nucleus and membrane-bound organelles
viruses are
acellular, parasitic particles composed of nucleic acid and protein
photosynthesis is light fueled conversion of
carbon dioxide to organic material
decomposition is the breakdown of
dead matter and wastes into simple compounds
biotechnology is the production of
foods, drugs, and vaccines using living organisms
genetic engineering is manipulating the
genes of organisms to make new products
bioremediation is using living organisms to
remedy an environmental problem
parasites live on OR in
the body of another organism called the host and it damages the host
pathogens are any
microbes that do harm
nearly 2,000 different microbes cause
diseases
is the most common disease
influenza
spontaneous generation is the early belief that
some forms of life could arise from vital forces present in nonliving or decomposing matter
theory of biogenesis was made by
Louis Pasteur. Living things can only arise from other living things
antonie van Leeuwenhoek was the first to
observe living microbes
theory is
if the hypothesis is supported by a growing body of evidence and was tested over and over
Ferdinand Cohn and John Tyndall each demonstrated the presence of
heat resistant forms of microbes. Cohn determined them endospores
sterility requires the elimination of all
life forms
who discovered that the human body is a source of infection
Dr. Oliver Holmes
who correlated infections w/physicians coming directly from autopsy to the maternity ward
Dr. Ignaz Semmelweis
Joseph Lister and aseptic technqiues
the techniques reduced microbes in medical settings to reduce infections.
involved disinfection of hands using chemicals
heat for sterilization
