Ch1 Book Flashcards
minute living things that individually are usually too small to be seen with the unaided eye
microbes aka microorganisms
what do microbes include
bacteria, fungi, protozoa, algae, viruses
are microbes beneficial
yes the majority actually help maintain the balance of living organisms and chemicals in our environment
these are disease producing
pathogenic
this is a system for naming organisms
nomenclature
this was established in 1735 by Carolous Linnaeus
nomenclature
how does nomenclature assign names
genus (first name always capitalized) and species (follows and is not capitalized)
these are simple, single celled(unicellular) organisms that do not have genetic material enclosed in a nuclear membrane
bacteria
what do prokaryotes include
bacteria and archaea
this is rodlike bacteria
bacillus
this is spherical/ovoid bacteria
coccus
this is corckscrew or curved bacteria
spiral
this is a carbohydrate and protein complex in cell walls that enclose bacteria
peptidoglycan
this is the main substance of plant and algal cell walls
cellulose
bacterial reproduction that involves dividing into two equal parts
binary fission
appendage bacteria use to swim with
flagella
these consist of prokaryotic cells, have cell walls but do not have peptidoglycan
archaea
these are a type of archaea that produce methane as a waste product from respiration
methanogens
these are a type of archaea that live in extremely salty environments
extreme halophiles
these are a type of archaea that live in hot sulfurous water
extreme thermophiles
these are not known to cause disease in humans
archaea
these are unicellular, eukaryotic, a variety of shapes and move by pseudopods, flagella, or cilia
protozoa
these move by using extensions of their cytoplasm
amebae
these live as free entities or parasites, some are photosynthetic and can reproduce sexually or asexually
protozoa
these are photosynthetic eukaryotes with a wide variety of shapes and are unicellular
algae
how do algae reproduce
sexually and asexually
what composes the cell walls of algae
cellulose
what do algae produce and why is it important
oxygen and carbohydrates, important to the balance of nature
these can only be seen with an electron microscope and are acellualr
viruses
what does acellualr mean
not cellular