bacteria Flashcards
1
Q
characteristics
A
unicellular, prokaryotic, single chromosome, asexual repoduction by binary fission, grow in moist environments, divided into 2 domains: archaea and bacteria
2
Q
bacteria shapes
A
- cocci (singular coccus): round or spherical
- bacilli (singular bacillus): rod shaped
- spirilla (singular spirillum): spiral shape
3
Q
aggregations
A
- mono=single
- diplo=two
- staphylo= clumped
- strepto=chain
4
Q
reproduction
asexual reproduction by binary fission
A
- chromosome duplication
- cell growth
- chromosomes separate
- cell builds a septum
- cell division
5
Q
reproduction
sexual reproduction by conjugation
A
- one cell links to another through a pilus
- genetic info is exchanged
- binary fission
6
Q
reproduction
plasmids
A
small loops of dna that are separate from the main chromosome with different genes
7
Q
gram staining
A
- gram + = thick protein layer, purple stain
- gram - = thin protein layer, pink stain
8
Q
A
9
Q
archaea
A
- oldest group of living organisms
- live without oxygen
10
Q
archaea
extremophile
A
able to live in extreme conditions
thermophiles: withstand extreme heat
acidophile: live in extremely acidic conditions
halophiles: live in extremely salty water
11
Q
A
12
Q
mesophiles
A
live in moderate conditions
