Students prepared streak plates to determine the oxygen requirements of Bacillus bob. The plates were incubated at 37degrees C for 48hrs. The students removed the plates from the jars and incubator on Friday, recorded their results and left them on their shelf.
Incubator had heavy growth
Anaroebic Jar had light growth
A student was absent on Frieday and looked at the plates on Monday. She told her group they read the plates wrong and both of their original results should have had heavy growth. Would you agree and change your answer?? Please Explain!!
2007-03-18 13:37:55 · 4 answers · asked by robrob 1 in Science & Mathematics ➔ Biology
Nope...think about what anaerobic means....
2007-03-18 13:46:44 · answer #1 · answered by spiffyjones86 2 · 0⤊ 0⤋
It is not clear to me if the plates were just left on the shelf or return to the appropriate conditions (aerobic-anaerobic environment). This question has many options and explanations depending on that.
2007-03-18 20:50:10 · answer #2 · answered by Lis 3 · 0⤊ 0⤋
The bacillus is obviously aerobic. You don't change observed results. Otherwise the experiment may as well not have been done.
You should try to explain why a result was not as expected, or accept that your preconceptions were wrong.
2007-03-18 20:47:50 · answer #3 · answered by Labsci 7 · 0⤊ 0⤋
I agree with her. The plates should have been read after 16-24 hours, not 48.
2007-03-18 20:47:08 · answer #4 · answered by AC 3 · 0⤊ 0⤋