Ch. 13: Evolution and Diversity Among the Microbes
very small, simple organisms, but they do everything that larger, multicellular organisms do. include viruses.
efficient single-celled organisms, with an envelope surrounding the cytoplasm, which contains the DNA.
do bacteria contain DNA?
chemical organic feeders that consume carbs
chemic inorganic feeds that consume rocks, sulfide, etc.
disease causing bacteria.
these thrive in habitats too extreme for most other organisms
animal like, fungi like, plant like
types of protists
not alive: lack metabolic system, unable to reproduce it takes over the protein making machinery of the host cell to produce more viral genetic material (DNA or RNA). nothing can fight them (no medication).
HIV example, RNA containing virus.
in the human body, there are more of these cells than human cells
bacteria, archea, and eurkarya
most basic division among all organisms on earth is among these three
contain DNA, no nucleus, uses largest variety of energy sources.
archaea and eukarya
the domains that are more closely related
they are eukaryotic, single cells organisms. examples: paramecium, slime mold, brown algae, diatom
causes sickle-cell anemia, transmitted by paramecium, confers resistance to malia, common in north america.
virus that mutates frequently, derived from simian immunodeficiency virus, contains RNA. NOT DNA