A single-cell organism or plant that feeds on simple sugars that are converted into alcohol and carbon dioxide through fermentation. Yeast is used as an activator to start various reactions necessary to produce alchoholic beverages and baked goods. In alcoholic beverages, it is a key enabler for the fermentation of grains resulting in the creation of alcohol and carbonation common in wine, beer, and other beverages.
Feel Pregnant but the Pregnancy Test is Negative? Nausea and vomiting. Generally speaking the nausea and vomiting of pregnancy are presumed to start about four weeks from conception. Some other causes of nausea and vomiting are viral, or bacterial, infections in the bowel.
My period is 3 weeks late, negative pregnancy test, no symptoms of pregnancy either and now I am spotting. 3. Get help from a doctor now âº. Non-ovulatory cycle: You didn't ovulate in your last cycle, or that it was a late ovulation. Period two weeks late negative pregnancy test. 2  Late period negative pregnancy test no symptoms. 3  Period 4 days late negative pregnancy test no symptoms. 4  Period is 2 weeks late but negative pregnancy test.