Cellular microbes Flashcards
1
Q
what is an organotroph?
A
prokaryotic viruses that gain electrons from organic compounds
2
Q
what are lithotrophs?
A
prokaryotic viruses that gain electrons from inorganic compounds
2
Q
what is a niche?
A
set of environmental conditions in
which a species of microbe can replicate
2
Q
what are the conditions that determine where a microbe can live?
A
- Nutrient availability
- Oxygen concentration
- Temperature
- pH
- Light intensity
- Radiation
- Solute concentration (osmolarity) &
water activity
3
Q
what are the three types of microbe-host interations?
A
- Pathogenic
- Interact with host organism; host
damaged
- Interact with host organism; host
- Mutualistic
- Interact with host organism; both
partners benefit
- Interact with host organism; both
- Commensal
- Interact with host organism; one
partner benefits, other unaffected
- Interact with host organism; one
4
Q
what is the bacterial cell wall made of?
A
peptidoglycan
5
Q
what is conjugation?
A
- type of horizontal gene transfer
- Plasmid transferred from donor cell to recipient cell through the
F-pilus
6
Q
osmotrophy
A
digesting food outside the body by secreting
hydrolytic enzymes and then acquiring nutrients by
absorption
