You have just started brewing beer at home, and your first batch is now ready. you used the yeast saccharomyces cerevisia, which can perform both aerobic cellular respiration and fermentation. when you test the beer, you determine that the alcohol content is almost zero. what could have been present in the fermentation reaction apparatus that caused this problem?
a. oxygenb. carbon dioxidec. pyruvic acidd. glucose

The correct answer is option a. "oxygen".

Explanation:

Fermentation is the biological process behind the creation of beer. Saccharomyces cerevisia, the yeast used for beer's production can perform both aerobic cellular respiration and fermentation. In the presence of oxygen, Saccharomyces cerevisia would undergo aerobic cellular respiration and will broke glucose to carbon dioxide and will produce energy. In the absence of oxygen, the yeast would undergo fermentation and the glucose will be converted into ethanol (alcohol). If after the brewing procedure the alcohol content is almost zero, it is possible that oxygen is present in the fermentation reaction apparatus. Under the presence of oxygen Saccharomyces cerevisia will undergo aerobic cellular respiration not fermentation.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.