“Teach me,” she said.

[DMN]

Originally Posted by Cecily [You must be logged in to view images. Log in or Register.]

Question I have is wtf is fermentation? Lol. Feel like that’s a bad point to miss! Krebs cycle is fucking scary to look at and I need to learn the simplified version again to really get this.

In micro the definition is generally: the ability to metabolize sugars(produce ATP) without oxygen(anaerobically).

[Cecily]

Originally Posted by DMN [You must be logged in to view images. Log in or Register.]

In micro the definition is generally: the ability to metabolize sugars(produce ATP) without oxygen(anaerobically).

Word. Thank you.

Originally Posted by DMN [You must be logged in to view images. Log in or Register.]

No, the F in OF is specifically for fermentation. if you get a change in PH in the "F" part of that test, the organism can use fermentation for a metabolic pathway.

Ohhh ok. So if it’s oxidative in open medium and ferments in sealed it has both pathways? And I guess they can be oxidative only and fermentative only. Or just not mess with that sugar. Thank you! That helps me get it.

[DMN]

Originally Posted by Cecily [You must be logged in to view images. Log in or Register.]

Word. Thank you.



Ohhh ok. So if it’s oxidative in open medium and ferments in sealed it has both pathways? And I guess they can be oxidative only and fermentation only. Or just not mess with that sugar. Thank you! That helps me get it.

99% of the time the answer is yes, but there are weird exceptions in much of biology. I'm not quite sure what you mean by "I guess they can be oxidative only and fermentation only".

[Cecily]

One pathway or the other. Or both.

Aerobic respiration only
Aerobic and anaerobic respiration
Anaerobic respiration only

It seems like this could be a differential for aerobes, facultative anaerobes, and anaerobes.

[DMN]

Originally Posted by Cecily [You must be logged in to view images. Log in or Register.]

One pathway or the other. Or both.

Aerobic respiration only
Aerobic and anaerobic respiration
Anaerobic respiration only

It seems like this could be a differential for aerobes, facultative anaerobes, and anaerobes.

Yes but that test won't perfectly differentiate those three. You could have an obligate anerobe that grows at the bottom of the "o" tube where there is little to no oxygen. So it might look exactly like a facultative anaerobe.

[Cecily]

Originally Posted by DMN [You must be logged in to view images. Log in or Register.]

Yes but that test won't perfectly differentiate those three. You could have an obligate anerobe that grows at the bottom of the "o" tube where there is little to no oxygen. So it might look exactly like a facultative anaerobe.

Gotcha. Thank you for your replies. Lab quiz tomorrow and this helps a lot.

[DMN]

Originally Posted by Cecily [You must be logged in to view images. Log in or Register.]

Gotcha. Thank you for your replies. Lab quiz tomorrow and this helps a lot.

NP. It's unfortunate you don't know just how much you need to know for the quiz. It could be pretty easy or really complicated.