Bacteria Flashcards
Where are bacteria found?
in all ecosystems on earth
What can bacteria adapt to?
their environment to enable survival and growth
What do ecosystems depend on?
on bacteria surviving
What is bacteria’s function
cycling nutrients like Carbon, Nitrogen and Sulphur
What can bacteria decompose?
organisms
Can bacteria cause disease
yes but relatively rare
How can bacteria be classified?
shape
stain
oxygen needs
What are the two names for each organism?
first its genus
then its species
Example – Escherichia coli (E-coli)
What can happen to bacteria in species do?
be further differentiated into strains
What can bacteria be divided into?
two groups using a staining technique called Gram’s method
What are the two groups of bacteria
Gram positive bacteria
Gram negative bacteria
What can gram positive bacteria
Retain stain after rinsing with solvent
What can gram negative bacteria not do?
Not retain dye
How can aerobic bacteria grow and replicate?
only in presence of oxygen
What can anaerobic bacteria function without ?
presence of oxygen
