 |
| 1 | |
Some biologists have been reluctant to accept the three-domain system.
Why would this be so? |
| | |
|
|
|
| 2 | |
Why must a sample contain so many microorganisms for any to be viewed
by microscopic examination? |
| | |
|
|
|
| 3 | |
Why are molecular methods especially useful when bacteria are difficult
to cultivate? |
| | |
|
|
|
| 4 | |
What observations would you expect when E. coli O157:H7 is cultured
on a medium containing sorbitol and a pH indicator? |
| | |
|
|
|
| 5 | |
Some scientists that work on bacterial classification systems are called
"lumpers" and others are called "splitters." What do these terms likely indicate? |
| | |
|
|
|
| 6 | |
How would you classify two isolates that have a similarity coefficient
of 90%? |
| | |
|
|
|
| 7 | |
Why would it be easier to sequence rDNA than rRNA? |
| | |
|
|