Bacteria Flashcards
Clostridium
Gram-positive, endospore, forming rods they are common in soils, vegetative cells live in anaerobic microenvironment, created by aerobes consuming oxygen
What are anaerobic chemolithotrophs?
Chemolithotrophs oxidize reduced inorganic chemicals to obtain energy
What are methanogens?
Methane-producing archaea
Chemoorganotrophs
Oxidize organic compounds to obtain energy
Sulfur and sulfate reducing bacteria
Produce hydrogen sulfide, which is corrosive to metals. It’s important for the sulfur cycle. Some archaea are sulfate reducing bacteria
Anaerobic Chemoorganotrophs
Fermentation
What do lactic acid bacteria produce?
Lactic acid
Give an example of lactic acid bacteria
Streptococcus
What kind of lactic acid bacteria is used to make cheese and yogurt?
Lactococcus
What kind of lactic acid bacteria is found in the human an animal intestinal tract
Enterococcus
What kind of lactic acid bacteria is rod shaped in commonly found in the mouth and vagina
Lactobacillus
How does Lactobacillus help prevent vaginal infections?
Lowers pH
Is Propionibacterium gram-positive or negative
Positive it’s shape is pleomorphic rods
What doe’s Propionibacterium produce?
Propanoic acid via fermentation can also ferment lactic acid
What are the properties of purple bacteria?
Gram-negative, they appear red, orange, or purple. They are photo synthetic apparatus in cytoplasmic membrane.
