Cell Flashcards
in the primitive environment earth’s atmosphere was composed of
carbon dioxide, methane, ammonia and hydrogen gas
earth was described to be full of __ with little oxygen gas, no ozone layer and lots of UV rays
lightning, volcanic eruptions, torrential rains
according to Oparin this kind of environment produced
hydrocyanic acid, formaldehyde, animo acids, purines and pyrimidines
what is formed when dry organic compounds are heated or when exposed to inorganic polyphosphate or minerals
biopolymers are formed
he crucial event leading up to the formation of the first cell
the development of the outer membrane
the first living organisms that arose from the primeval soup are called
ancestral prokaryotes
organisms classified into archaebacteria
anaerobic bacteria, aerobic bacteria and eubacteria
living in hot acid conditions
aerobic bacteria
living in high salt conditions
anaerobic bacteria
examples are gram bacteria and green photosynthetic bacteria
eubacteria
the simplest and most studied prokaryote is
E-coli
the bacterial cell wall is composed of polysaccharide backbone consisting of
N-acetyl muramic acid and N-acetyl glucosamine
the plant cell wall consists of
cellulose, hemicellulose and pectin
cellulose microfibrils are linked by hemicelluloses such as __ to form a cellulose-hemicellulose network embedded in a pectin maatrix
xyloglucan
is a complexphenolic polymer that penetrates the spaces in the cell wall between CHP compoments..
lignin
