1 Flashcards
cell theory
All life is made of cells, cells come from other cells, cells are the fundamental unit of life
six basic categories of microorganisms
bacteria, archaea, algae, fungi, protozoans, helminths
acellular microorganisms
viruses, prions
domains of life
Bacteria, Archaea, Eukarya
all cells possess these:
cytoplasm, plasma membrane, one or more chromosomes made from DNA, and ribosomes
prokaryotes vs eukaryotes
prokaryotes lack a nucleus, do not have membrane bound organelles, have DNA in the for, of single, circular chromosome. eukaryotes have a nucleus, have membrane bound organelles, have 1+ chromosomes in linear strand, tend to be bigger than prokaryotes
cell morphology
cell shape
Bacteria: unicellular or multicellular?
unicellular
prokaryotic microorganisms
bacteria, archaea
bacterial cell wall contains
peptidoglycan
bacterial replication/reproduction
binary fission, asexual
bacteria: pathogenic or not?
can be pathogenic, not all are pathogens
archaea: unicellular or mutlicellular?
unicellular
archaea replication/reproduction
binary fission, asexual
archaea: pathogenic or not?
not human pathogens
archaea differs from bacteria in
evolutionary history, genetics, metabolic pathways, and cell wall/membrane compostition
archaea cell wall composed of
pseudopeptidoglycan
eukaryotic microorganisms
algae, fungi, protozoa, helminths
algae: unicellular or multicellular?
can either be unicellular or mulitcelluar
algae: pathogenic or not?
not known to be human pathogens
algae cell wall composition
cellulose
algae replication/reproduction
mitosis, both sexually and asexually
protozoa: unicellular or multicellular?
unicellular
protozoans: pathogenic or not?
most are harmless, some are human pathogens