EXAM 1: BIO 203 LCC MUSSER
QUESTIONS & ANSWERS 100%
CORRECT
Microbiology - ANSWERThe study of microorganisms
Bacteria - ANSWERsingle-celled organisms that lack a nucleus; prokaryotes
cell envelope - ANSWERincludes plasma membrane, cell wall, and glycocalyx
Gram-positive bacteria - ANSWERthick cell wall composed primarily of
peptidoglycan and cell membrane, stain purple
Gram-negative bacteria - ANSWERBacteria that have a thin peptidoglycan cell wall
covered by an outer plasma membrane. Stain red.
Gram negative cell walls - ANSWERhave lipopolysaccharides
acid fast bacteria - ANSWERRetain the primary stain even when treated with acid
alcohol. Cell walls contain mycolic acid. Includes Mycobacterium.
acid fast stain - ANSWERcarbolfuchsin binds to cytoplasm and resists removal when
acidic solution is added
nucleoid region - ANSWERThe region in a prokaryotic cell consisting of a
concentrated mass of DNA.
Chemotaxis - ANSWERCell movement that occurs in response to chemical stimulus
Archaea - ANSWEROne of two prokaryotic domains, the other being Bacteria. The
extremists: Live in unlivable conditions
Fungi - ANSWERA eukaryotic organism that has cell walls, uses spores to
reproduce, and is a heterotroph that feeds by absorbing its food.
Protozoa - ANSWEREukaryotic, unicellular, ingest food from surroundings, can go
into cyst state
Algae - ANSWEREukaryotic, Autotrophs (Self feeders through photosynthesis)
Helminthe - ANSWERworms, Eukaryotic, multicellular
Virus - ANSWERnoncellular, ultimate parasite, no metabolism
, Saprophytic - ANSWERFungi that get their energy from decaying organic matter
Prokaryote - ANSWERno nucleus or membrane bound organelles
Eukaryote - ANSWERA cell that contains a nucleus and membrane bound
organelles
Why study microbiology? - ANSWERmicrobes have profound impact on our lives
and health
What are the 7 classes of microbes? - ANSWERBacteria, Archaea,Fungi, Protozoa,
Algae, Helminthe, and Virus
How are the 7 classes of Microbes similar? - ANSWER-All are ubiquitous
-Are either unicellular, multicellular, or cell clusters
-Have means of transport
What is life? - ANSWERcomposed of cells, metabolism, growth and reproduction
Are all microbes "alive"? - ANSWERNo. Viruses are acellular and only thrive within a
host
What is the binomial nomenclature system? - ANSWEREach distinct species is
given a scientific name that is a global standard to avoid confusion
Scientific names consist of _________________ - ANSWERGenus and species
How do you correctly write the name of a microorganism? - ANSWERGenus is
always capitalized and species is always lower case.
Italics if typed, underlined if handwritten
Must be spelled out entirely first time, then can be abbreviated with first letter of
Genus and the entire species
5 kingdom domain system - ANSWERBased on morphology (differences you can
see)
Grouped into plants, animals, protists, and monera
3 domain classification system - ANSWERBacteria, Archaea, Eukarya. Shows
genetic similarity that cant just be seen with the naked eye
What is spontaneous generation? - ANSWERthe theory that life appears from
nonliving things
What is biogensis? - ANSWERidea that living things only come from other living
things
QUESTIONS & ANSWERS 100%
CORRECT
Microbiology - ANSWERThe study of microorganisms
Bacteria - ANSWERsingle-celled organisms that lack a nucleus; prokaryotes
cell envelope - ANSWERincludes plasma membrane, cell wall, and glycocalyx
Gram-positive bacteria - ANSWERthick cell wall composed primarily of
peptidoglycan and cell membrane, stain purple
Gram-negative bacteria - ANSWERBacteria that have a thin peptidoglycan cell wall
covered by an outer plasma membrane. Stain red.
Gram negative cell walls - ANSWERhave lipopolysaccharides
acid fast bacteria - ANSWERRetain the primary stain even when treated with acid
alcohol. Cell walls contain mycolic acid. Includes Mycobacterium.
acid fast stain - ANSWERcarbolfuchsin binds to cytoplasm and resists removal when
acidic solution is added
nucleoid region - ANSWERThe region in a prokaryotic cell consisting of a
concentrated mass of DNA.
Chemotaxis - ANSWERCell movement that occurs in response to chemical stimulus
Archaea - ANSWEROne of two prokaryotic domains, the other being Bacteria. The
extremists: Live in unlivable conditions
Fungi - ANSWERA eukaryotic organism that has cell walls, uses spores to
reproduce, and is a heterotroph that feeds by absorbing its food.
Protozoa - ANSWEREukaryotic, unicellular, ingest food from surroundings, can go
into cyst state
Algae - ANSWEREukaryotic, Autotrophs (Self feeders through photosynthesis)
Helminthe - ANSWERworms, Eukaryotic, multicellular
Virus - ANSWERnoncellular, ultimate parasite, no metabolism
, Saprophytic - ANSWERFungi that get their energy from decaying organic matter
Prokaryote - ANSWERno nucleus or membrane bound organelles
Eukaryote - ANSWERA cell that contains a nucleus and membrane bound
organelles
Why study microbiology? - ANSWERmicrobes have profound impact on our lives
and health
What are the 7 classes of microbes? - ANSWERBacteria, Archaea,Fungi, Protozoa,
Algae, Helminthe, and Virus
How are the 7 classes of Microbes similar? - ANSWER-All are ubiquitous
-Are either unicellular, multicellular, or cell clusters
-Have means of transport
What is life? - ANSWERcomposed of cells, metabolism, growth and reproduction
Are all microbes "alive"? - ANSWERNo. Viruses are acellular and only thrive within a
host
What is the binomial nomenclature system? - ANSWEREach distinct species is
given a scientific name that is a global standard to avoid confusion
Scientific names consist of _________________ - ANSWERGenus and species
How do you correctly write the name of a microorganism? - ANSWERGenus is
always capitalized and species is always lower case.
Italics if typed, underlined if handwritten
Must be spelled out entirely first time, then can be abbreviated with first letter of
Genus and the entire species
5 kingdom domain system - ANSWERBased on morphology (differences you can
see)
Grouped into plants, animals, protists, and monera
3 domain classification system - ANSWERBacteria, Archaea, Eukarya. Shows
genetic similarity that cant just be seen with the naked eye
What is spontaneous generation? - ANSWERthe theory that life appears from
nonliving things
What is biogensis? - ANSWERidea that living things only come from other living
things
