Ch. 13: Evolution and Diversity Among the Microbes

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microbes

very small, simple organisms, but they do everything that larger, multicellular organisms do. include viruses.

bacteria

efficient single-celled organisms, with an envelope surrounding the cytoplasm, which contains the DNA.

yes

do bacteria contain DNA?

chemoorganotrophs

chemical organic feeders that consume carbs

chemolithotrophs

chemic inorganic feeds that consume rocks, sulfide, etc.

pathogenic bacteria

disease causing bacteria.

archea

these thrive in habitats too extreme for most other organisms

animal like, fungi like, plant like

types of protists

virus

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).

retrovirus

HIV example, RNA containing virus.

microbial

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

prokaryotes

contain DNA, no nucleus, uses largest variety of energy sources.

archaea and eukarya

the domains that are more closely related

protists

they are eukaryotic, single cells organisms. examples: paramecium, slime mold, brown algae, diatom

Plasmodium

causes sickle-cell anemia, transmitted by paramecium, confers resistance to malia, common in north america.

HIV

virus that mutates frequently, derived from simian immunodeficiency virus, contains RNA. NOT DNA

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