Bacteria Flashcards
are of
immense importance
because of their rapid
growth, reproduction,
and mutation rates, as
well as, their ability to
exist under adverse
conditions.
Bacteria
The oldest fossils
known, nearly _____
billion years old, are
fossils of bacteria-like
organisms.
3.5
Can be autotrophs or heterotrophs
Bacteria
Those that are classified as _______ are either ______ obtaining energy from sunlight or ___________ breaking down inorganic substances for energy.
Autotrophs
Photosynthetic
chemosynthetic
classified as heterotrophs derive energy from breaking down complex organic compounds in the environment. This includes saprobes, bacteria that feed on decaying material and organic wastes, as well as those that live as parasites, absorbing nutrients from living organisms.
Bacteria
aerobic
which
means they require
oxygen to live
They are
found in swamp sediments, sewage, and in buried
landfills as well as large intestines.
Methogens
These are salt-loving Archaebacteria that grow in
places like the Great Salt Lake of Utah. They are
photosynthetic autotrophs. Halophiles are aerobes
and perform aerobic respiration.
Halophiles
These are Archaebacteria from hot springs and
other high temperature environments. Some can
grow above the boiling temperature of water.
They are anaerobes, performing anaerobic
respiration.
Thermophiles
This is a group of bacteria
that includes some that are
single cells and some that are
chains of cells. You may have
seen them as “green slime” in
your aquarium or in a pond.
Cyanobacteria
What put the tang
in yogurt and the sour
in sourdough bread.
Bacteria
What help to
break down dead
organic matter.
Saprobes
What make up the
base of the food web
environments.
Bacteria
Still other ______ live
on the roots of certain
plants, converting
nitrogen into a usable
form.
Bacteria
are often maligned as the causes of human and animal disease. However, certain bacteria, the actinomycetes, produce antibiotics such as streptomycin and nocardicin.
Bacteria
