I am doing PJAS. I need to research yeast. Problem is, none of all of the books in the science room have anything about yeast. I need to know how exactly it reproduces, what (natrual) conditions are the most favorable for yeast to flourish, and what sugar it reacts the best to (in making it grow.)
All and (most) any answers are appreciated.
2006-10-30 12:50:15 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
I'm actually doing a lab in my Biotechnology class tomorrow using Brewer's Yeast. We are determining which conditions it grows the best in (we are testing 4, 20, 30, 37, and 42 degrees Celsius). I would assume that since it can also be used in baking that it would be a higher temperature, such as 42 degrees. I should have results by Wednesday if you are still looking by then.
I'll check back later. Good Luck!
(I would suggest figuring out what type of yeast you are talking about and do a search on it though)
2006-10-30 13:15:12 · answer #1 · answered by toothpickgurl 3 · 0⤊ 0⤋
Without oxygen, the yeast respire anaerobically, producing ethanol. Beyond a certain concentration of ethanol, the yeast gets killed as ethanol is in fact toxic. Perhaps anaerobic respiration gives rise to lesser energy, hence the yeast cell would be able to survive but do not have enough energy to support growth.
2016-03-28 02:11:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
yeast as in brewers yeast or yeast as in yeast infection? If you're talking about yeast infections, try doing research on candida albicans. I guarantee you'll find something about that. Try the web if no luck in the books.
2006-10-30 12:51:58 · answer #3 · answered by KS5957 4 · 0⤊ 0⤋