Monera Bacteria n extremely important rapid growth Reproduction
Monera (Bacteria)
n extremely important – rapid growth – Reproduction – mutation rates – exist under adverse conditions.
n Bacteria can be autotrophs or heterotrophs.
heterotrophs get energy from breaking down complex organic compounds in the environment. n saprobes, n – feed on decaying material and organic wastes, n Parasites – absorbing nutrients from living organisms.
n bacteria can be – aerobic which means they require oxygen to live or – anaerobic which means oxygen is deadly to them. Green patches are green sulfur bacteria. The rust patches are colonies of purple non sulfur bacteria. The red patches are purple sulfur bacteria.
Bacteria are often the causes of human and animal disease. n However, certain bacteria produce antibiotics such as streptomycin. n
n Other Bacteria live symbiotically in the guts of animals or elsewhere in their bodies. n For example, bacteria in your gut produce vitamin K which is essential to blood clot formation.
n Bacteria live on the roots of certain plants, converting nitrogen into a usable form.
n Bacteria put the tang in yogurt and the sour in sourdough bread. n Saprobes help to break down dead organic matter. Streptococcus thermophilus in yogurt
n Bacteria are prokaryotic and unicellular. n Bacteria have cell walls. n Bacteria have circular DNA called plasmids n Bacteria can be anaerobes or aerobes. n Bacteria are heterotrophs or autotrophs. n Bacteria are awesome!
Shapes of Bacteria
n Penicillin kills bacteria by making holes in their cell walls. n Unfortunately, many bacteria have developed resistance to this antibiotic.
Penicillin, an antibiotic, comes from molds of the genus Penicillium Notice the area of inhibition around the Penicillium.
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